'Forever Plaid': Opening today, Florida's longest-running musical, Forever Plaid is returning to the Jaeb Theatre at the Tampa Bay Performing Arts Center. The musical comedy runs until Aug. 17. 7:30 p.m. Wednesday-Friday, 2 and 7:30 p.m. Saturday, 4 p.m. Sunday; 1010 N W.C. MacInnes Place, Tampa; $31.50. Call 229-7827 or visit tbpac.org.
Anniversary art mixer: The Tampa Artist Emporium will celebrate its one-year anniversary by offering live artist demonstrations, raffles and giveaways, and complimentary food and beverages. 5 p.m. 1618 Snow Ave., Tampa; Free. Call 254-3443 or visit online at tampaartistemporium.com.
Classic cinema: Watch Greta Garbo in her first comedy, Ninotchka. Released in 1939, the film centers on a Russian woman who falls for a Parisian man. 3 p.m. 711 N Franklin St., Tampa; $8. Call 274-8981 or visit the Web site tampatheatre.org.
Tom Petty and the Heartbreakers: The perennial rocker takes the stage with opening act Steve Winwood. 7:30 p.m. St. Pete Times Forum, 401 Channelside Drive, Tampa; $29.50-$99.75. Call 301-6600 or visit sptimesforum.com.
Shelby Lynne: Grammy winning eclectic musician Shelby Lynne brings her act to the Tampa Theatre. 7:30 p.m., 711 N Franklin St., Tampa; $31-$40.50. Call 274-8981 or visit tampatheatre.org.
Improv comedy show: John Witherspoon, who played a dog-catching father in the Friday movie series and has made more than a dozen appearances on The Late Show with David Letterman, brings his act to the Tampa Improv through Sunday. 8 p.m. Thursday, 8 and 10:30 p.m. Friday, 7:30 and 10 p.m. Saturday, 7 p.m. Sunday. Improv, Centro Ybor, 1600 E Eighth Ave., Tampa; $22-$25. Call 864-2200 or visit improvtampa.com.
Side Splitters Comedy Show: Tommy Blaze, who appeared on Friends and starred in the movie Rumpelstiltskin, brings his comedy stylings to the Side Splitters stage through Sunday. 8:30 p.m. Thursday; 8 and 10 p.m. Friday; 6, 8 and 10 Saturday; 7 p.m. Sunday. 12938 N Dale Mabry, Tampa; $10-$14. Call 960-1197 or visit sidesplitterscomedy.com.
To submit an event for the calendar, send an e-mail to Joshua Neiderer at email@example.com or by fax to (813) 226-3381. Submissions should be sent at least two weeks before the event.