DOCTOR NIGHTLIFE is considering changing her name to Vampire Ice and auditioning for Date Bait (see below). Or maybe I-Teeth. After all, we're moving toward a full moon. Rap it up, we'll take it. Meanwhile: FRIDAY

DANCING THE NIGHTS AWAY --

Really marathon dancers can have a field day on Superbowl weekend, and kick in for a couple of good causes as well. GWU holds its annual dance marathon -- from 8 p.m Friday till midnight Saturday -- to benefit the Muscular Dystrophy Association at the Marvin Center, 21st and H streets NW. The music is partly DJ'd and partly live from the back-in-black The Now (half of whom moonlight as members of the infamous Skatley Crue). Admission free, but donations requested at the door; for more information call 703/941-5001. The second half (third quarter) kicks off Saturday at 8 at the Sheraton Potomac Hotel on Shady Grove Road just west of I-270; R&B rousers Cross Town performs, and the $20 donation benefits the Coalition for the Homeless. One of the raffle prizes is a New York getaway with transportation on the Trump Shuttle; this is a taste test. For more information, call 202/328-1184. The last quarter starts at 9 at the Citadel, where a six-hour, three-DJ party is simultaneously Cellar Door domo Bill Kitchen's farewell blast and his last fund-raiser (now that's dedication) for the Washington Area Music Association; tickets are $15, available at Notte Luna downtown (202/408-9500); Tom Taylor in Georgetown (202/338-5550) and Retrospective in Adams-Morgan (202/483-8112).

SIT DOWN GROOVE --

It's like blood in the veins: Ronnie Earl, one of the finest, smoothest, swankiest jazz/blues/swing guitarists around, leads his Broadcasters into the Barns of Wolf Trap ($12; 202/432-0200).

TRUTH IN ADVERTISING --

Here's one band that takes the phrase "garage band" seriously -- the Motor Morons, an industrial-grunge group that plays songs about (what else) cars, that great American obsession. They open for Dait Bait, which is going on a short recording hiatus and auditioning bassists after this weekend, at d.c. space ($5; 202/347-4960).

JAMAICAN JOYRIDE --

He may have kicked the sand off his feet, but only for the dance hall. The quiet storm king of reggae, velvet-voiced Dennis Brown, returns to Kilimanjaro for two nights ($16; 800/543-3041 or 202/328-3838). SATURDAY

THE ROOTS OF RHYTHM REMAIN --

While the rockier swing-dance zydeco bands with their primarily white country and hill music influences have made the Cajun stomp a familiar beat around Washington, the somewhat gentler (though no less swinging), jazzier Creole zydeco recalls the black and blues and Afro-Caribbean family tree of the native Indians and the free men of color -- mixed black, French, Spanish and Indian -- who gave Louisiana its unique personality. The three generations of Ardoins, including NEA National Heritage Fellows "Bois Sec" Ardoin on accordion and "blues-waltz" fiddler Canray Fontenot, join the Bourbon Street institutions Doc Paulin's Dixieland Jazz Band (another family affair, featuring Paulin pere and five fils) for a night of authentic Louisiana Creole music at GWU's Lisner Auditorium ($20; 800/448-9009 or 202/432-0200). Discounts for seniors and GW students at the Marvin Center box office at 21st and H; for more information call 202/994-1500.

A FORK IN THE TRAIL --

For Washington's potent roots and rockabilly scene, Austin has always held a powerful attraction; and having drawn away both the Neptunes and Kelly Willis & Radio Ranch, it now has its spiritual hooks into the Thangs. Frontman Tom Clifford (who has a song on Willis's new album) and drummer Matt Eskey are relocating to Texas, while bassist Jim Gray and lead guitarist (and coincidentally, ex-Neptune) Jake Flack hold on here. The last wholly Thangs thang gets underway at the Grog & Tankard (202/333-3114).

LOCAL LIGHTS --

Two of the area's best original alternative bands, Bruno Loves Danger and Still Life, showcase at the Bayou ($5; 202/333-2897). Opening is the promising Something Big. MONDAY

CHANGE OF PACE --

Hagan's Four Courts, the white-lace Irish saloon-cum-barrister's quarters in the Rockville Mall complex, expands its music offerings beyond the weekend Celtic-flavored jiggery-pokery to a new after-8 jazz jam beginning this Monday. Guitarist George Zamarano and bassist Tom Willians anchor a primarily traditional set that as the weeks go on will feature different guest performers and a sign-in sheet for interested musicians. This week's band includes Saul Miller on sax, Phil McCusker on electric guitar, Dennis Gordon on drums and Ronnie Queen on percussion and vocals (301/738-7172). TUESDAY

CHANGE OF PACE 2 --

Meanwhile, Malarkey's semi-Irish saloon in Bethesda also adds a new flavor, but this one's reggae: a regular Black Sheep night (301/951-9000).

CHANGE OF FACE --

Last minute booking change at Blues Alley: Fattburger has canceled, and the Candace de Bartolo quartet, which is currently grooving all over the area (Takoma Station, Blue Angel, 219) drops into Georgetown for two sets ($12; 202/337-4141). WEDNESDAY

GRANTED, THAT'S GOOD GUITAR --

Northern Virginia jazz guitarists and sessions musicians Paul Bollenback and Vinny Valentino and former D.C. rocker Rick Molina, all between touring and recording duties, unite to premiere the eight-movement composition "New Music for Three Jazz Guitars," written by Bollenback and Valentino with the help of grants from the Virginia Commission for the Arts and NEA, at Blues Alley ($12; 202/337-4141).