What's DoingANTIQUES FAIR -- Friday 11 to 8, Saturday 11 to 6, Sunday noon to 5:30. About 150 dealers. $7, under 15 free. D.C. Armory, 2001 East Capitol St. SE. 202-547-9215 or 301-933-9433.

BENEFIT GALA -- Friday at 7, with entertainment by Alif Layla. $70 in advance, $80 at door. Sponsored by the Young Benefactors of the Smithsonian Institution at the Arthur M. Sackler Gallery, 1050 Independence Ave. SW. 202-357-3030.

BENEFIT AUCTION of goods and services, Friday at 7. $25. St. John's Episcopal Preschool and Church, 3240 O St. NW. 202-338-2574.

BENEFIT RUMMAGE SALE -- Saturday 9 to 2. $1. Sponsored by the Junior League of Annapolis for community programs. National Guard Armory, 18 Willow St., Annapolis. 410-224-8984.

CRAFTS FAIR -- Saturday 9 to 3. Woodbridge High School, 3001 Old Bridge Rd., Woodbridge. 703-790-3988.

"D.C. BIG FLEA" -- flea market, Saturday 9 to 6, Sunday 11 to 5. About 1100 booths. Dulles Expo Center, Willard Road off Route 28, Chantilly. 703-378-0910.

DEPRESSION GLASS SHOW -- Saturday 10 to 5, Sunday 10 to 4, by the Del Mar Va Depression Glass Club. $4. Duval High School, 9880 Good Luck Rd., Lanham. 301-565-2361.

"BLACK AND WHITE BALL" -- Saturday at 8, with music by the Eric Felten Jazz Orchestra. A benefit for the Phillips Collection photography acquisition fund. $100. Embassy of Finland, 3301 Massachusetts Ave. NW. 202-387-2151.

COMIC BOOK AND CARD SHOW -- Sunday 10 to 4. About 40 dealers offer sports and non-sports cards, comic books and others goods. $3. Holiday Inn, 2 Montgomery Village Ave., Gaithersburg. 301-990-4929.

DOLLHOUSE MINIATURES SHOW -- Sunday 11 to 5. $5, under 12 $3. Marriott Hotel, 5151 Pooks Hill Rd., Bethesda. 703-978-5353.

TOUR "COLOSSAL COLON" -- Wednesday from 10 to 7, Thursday through March 8 from 9 to 7. Visit a 40-foot long, 4-foot high crawl-through replica of the human colon. Sponsored by the Cancer Research and Prevention Foundation. Freedom Plaza, 13th and Pennsylvania NW. 202-828-9751.

HOME AND GARDEN SHOW -- Thursday 11 to 9, and through March 9. Displays by more than 700 vendors of home- and garden-related goods and services. $9, ages 6 to 12 $4, younger free. Washington Convention Center, 900 Ninth St. NW. 703-823-7960 or 202-789-1600.

NATIONAL CAPITAL BOAT SHOW -- Thursday 2 to 9, and through March 9. Displays of boats and related goods by about 40 dealers. $8, ages 6 to 12 $2, younger free. Dulles Expo Center, Willard Road off Route 28, Chantilly. 703-378-0910.