Katt Williams: If Williams actually shows up this time, unlike his last-minute cancelation last year at the Tampa Bay Times Forum, the audience could be in for one funny night. Show is at 8 p.m. at University of South Florida Sun Dome, 4202 E Fowler Ave., Tampa. $48.75-$128.75. (813) 974-3004.
Country in the Park: The city of Pinellas Park's annual festival and trade show includes live music by country hit maker Mark Chesnutt. It's at 10 a.m. at England Brothers Bandshell Park, 5010 81st Ave. N, Pinellas Park. Free. (727) 541-0895.
Vanilla Ice: The Ice, Ice Baby rapper will take us back to the '90s with this performance at the beach bar at 10:30 p.m. at Shepard's Beach Resort, 619 S Gulfview Blvd, Clearwater. $15. (727) 442-5107.
KIDS AND FAMILY
Rough Riders St. Patrick's Night Parade: Krewes from across Florida celebrate St. Patrick's Day with beads, floats and more. Avoid crowds and bad parking situations by taking the trolley to the parade. It's 8 p.m., Downtown Ybor City, E Seventh Avenue and N 14th Street.
St. Patrick's Day River O'Green Fest: The Hillsborough River will turn bright (biodegradable) green and there will be Irish entertainment, food trucks, a children's area and more. Bring three nonperishable food items and you'll get a green "Saint Patrick's Army" shirt provided by the Salvation Army. It's 11 a.m. to 4 p.m. at Curtis Hixon Park, 600 N Ashley Drive, Tampa.
SEASON PREMIERE Da Vinci's Demons, 9 p.m., Starz As Season 2 of the historical drama series about a young Leonardo Da Vinci opens, the Pazzis are making their move, while Leonardo (Tom Riley) takes a gamble for Florence's future.
John Leguizamo's Ghetto Klown, 10 p.m. HBO In his fifth solo special for HBO, the actor and comedian takes his audience on a roller-coaster ride through his life.
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