On TV this Friday: Cue the pomp and ready the circumstance, because the London Olympic games have arrived! Elsewhere: You can’t go home again, though XIII and Nikita‘s Alex try anyway; Olivia Wilde graces House with her presence and Effie Trinket herself swings by Comedy Bang! Bang!May the odds be ever in your favor, and here are nine programs to check out tonight.

7:30 pm 2012 Summer Olympics: Opening Ceremony (NBC) | It’s unlikely the kick-off will match China’s mandatory citizen participation efforts from four years ago, but the Danny Boyle-directed opening to this year’s summer games will involve a cast of thousands and a performance by Sir Paul McCartney — definitely worth seeing.

8 pm House (Fox)| In this Repeat to Revisit, a collegiate cheerleader who hears his dead brother’s voice is interesting and all, but the real draw is the glorious return of Olivia…