"Samantha Who?" (7 p.m., WLS-Channel 7): In the first of new back-to-back episodes, Chicago's favorite son Billy Zane plays Sam's boss and ex-love. If you're as confused as amnesiac Samantha, that could be because Zane replaces Timothy Olyphant, who couldn't return due to scheduling problems.
"Inside: Rolling Stones in Rio" (8 p.m., WTTW-Channel 11): A free concert on Copacabana Beach. The next best thing to being there.
"So You Think You Can Dance" (8 p.m., WFLD-Channel 32): Kelly Rowland, who co-hosts "The Fashion Show," performs in an effort to remind us that she's more than Isaac Mizrahi's sidekick.
"Ghost World" (8 p.m., Lifetime): Remember the good old days - 2001 -- when Scarlett Johansson was a second banana and Steve Buscemi was a romantic lead? No?
"Pitchmen" (8 p.m., Discovery): A tribute to Billy Mays. Presumably more low-key than Michael Jackson's.