At Man Night Club's "Liquid Saturdays": Classic 80s tunes are the rage in the cage. Don't forget the black lipstick. 21 Brookline St. (corner of Green and Franklin streets), Central Square. 864-0400. 10 p.m. $5 for 21+, $10 for 19+.

Calm your frazzled nerves with the House of Blues' Saturdays afternoon blues and jazz matinees. Take the folks for lunch when they visit. The House of Blues, 96 Winthrop St. 491-2583. 2 p.m. Performances are FREE; lunch is not.

Michael Flatley occupies your dreams. Explore this new interest further with a performance by Dervish, a traditional Irish folk sextet from County Sligo. Somerville Theatre, 55 Davis Square. 625-5700. 8 p.m. $17.50

Live Jazz at Regattabar is sexy. The John Scofield Quarter is excellent. The Charles Hotel. 661-5000. 8 p.m. and 10 p.m. $16.

So that's what that brick building is! The Arthur M. Sackler Museum may have gone unnoticed until now, but it doesn't have to stay that way. Ellsworth Kelly's early (1948-1955 drawings are on display through May 16.485 Broadway. 495-9400. Students $3. Never force the latest Bruce Willis action flick on a date again. For the same price, you can see brand-new one-of-a-kind entertainment in the from of Improv Boston. Back Alley Theater, 1253 Cambridge St. 576-1253. 8 p.m. and 10:30 p.m. $8.

"High art" meets shop signs, smiley faces and graffiti. Five international artists explore painting's relationship to new media and pop culture. Catch the tail end of this exhibit at the Institute of Contemporary Art through March 14. The Institute of Contemporary Art, 955 Boylston St. 266-5152. $3.25.

Sinfully indulge in the staff of life at the Chocolate Bar at Cafe Fleuri every Saturday 1 p.m. to 3 p.m. Le Meridien Hotel, 250 Franklin St. 451-1900. $15.50.

Arthur Miller's genius transcends time. The Crubible is being performed at Brandeis' Spingold Theater Arts Center, 415 South St. 781-736-3400. Through Sunday night. 8pm. $11.50-$13.50; students half-price with valid ID.

HGC Lite and The Brothers of Kuumba perform at Lowell Lecture Hall at 8 p.m. Student tickets are $5. Call Sanders Theater Box office at 496-2222 for ticket info.

Fantastic Planet at the Brattle. (See Friday listing for details)

Harpoon St. Patrick's Festival. 2 to 11 p.m. (See Friday listing for details.)

The Harvard Advocate presents "Sampler." 11 a.m. to 5 p.m. (See Friday listing for details.)