IS IT toe shoes or tapping you crave? Herewith some noteworthy footnotes:

*For a little bit of Christmas in April, American Ballet Theater ends its season here with a weekend of "Nutcracker" performances.

The opulent production, first staged in 1976 by ABT artistic director Mikhail Baryshnikov, will be performed four times, each with a different cast of principals: Bonnie Moore and Johann Renvall, Marianna Tcherkassky and Danilo Radojevic, Amanda McKerrow and Patrick Bissell, Cheryl Yeager and Ross Stretton.

Each of the ballerinas received a goodly portion of her training in this city -- Moore, Tcherkassky and McKerrow at the Washington School of Ballet, and Yeager at the School of the Maryland Ballet.

*In connection with the opening of the Museum of American History's exhibition "Hollywood: Legend and Reality," the Philadelphia Tap Dancers pay tribute to great dancers of the silver screen. This gifted trio, headed by veteran hoofer LaVaughn Robinson, will focus on the tap and soft shoe style of such masters as John Bubbles, Bill Robinson, Peg Leg Bates and Fred Astaire.

Through ancedotes, audience participation and their own electric routines, these dancers instruct and entertain. Tap dancers and tap students who bring their shoes will be invited on stage at the end of the show for a group performance.

AMERICAN BALLET THEATER -- "The Nutcracker," Saturday at 2 and 8, Sunday at 1:30 and 7:30, Kennedy Center Opera House.

PHILADELPHIA TAP DANCERS -- Sunday at 3 p.m., Baird Auditorium, 10th and Constitution Avenue NW. Tickets $6 to $10. Call 357-3030.