Photo by yostinator.

MUSIC: Patti LaBelle, the Let Freedom Ring Choir and Rev. Nolan Williams Jr. perform a “musical celebration of Martin Luther King Jr.’s legacy” at the Let Freedom Ring concert at the Kennedy Center’s Millennium Stage (2700 F Street NW). Free tickets will be given out at 4 p.m. to those in line. The show starts at 6 p.m.

>> The Music Center at Strathmore (5301 Tuckerman Lane, North Bethesda) presents Dr. Martin Luther King, Jr.’s Birthday Tribute and Celebration featuring gospel and jazz artists Men of Valor, Brian Lenair and Marcus Johnson. 4 p.m. Free, but tickets required. Advance tickets have sold out, but a stand-by line will form at 3 p.m. and at 3:45 p.m. all remaining seats will be released to those in line.

FOOD & DRINK: DealsForDeeds.com has paired up with D.C. food trucks for “Deals on Wheels Week.” You get food deals — like today’s offer of Eat Wonky’s Wonky dog and a drink for $3.75 (that’s 50 percent off!) — and Miriam’s Kitchen gets support (hopefully making their modest goal of $250).

>> Restaurant Week kicks off tonight, with dozens of D.C. restaurants offering three-course meals for $20.11 (lunch) and $35.11 (dinner). While available reservations at most places are probably limited at this point, check out our recent reviews of Againn and Art and Soul, when deciding where to eat.

MOVIES: We love Mondays for the $1 movies at Arlington Cinema and Drafthouse (2903 Columbia Pike, Arlington). Tonight, catch The Social Network at 7:15 p.m. and Unstoppable at 9:50 p.m. Just a buck each.