Not easy being green

"The Muppets" may not make it to a second season, but it's going out in subversive style, tweaking critics who say the show has ruined the spirit of the original. In the latest episode, Kermit and Miss Piggy must pretend that they are still together to appease sticks-in-the-mud — er, I mean, nephew Robin. 7:30 p.m. KSTP, Ch. 5

Far from nirvana

For those still under the misguided belief that heroin use is limited to the part of New York where no tourists ever go comes a new "Frontline" that looks at the effects of the drug through the experiences of four addicts in Seattle. 9 p.m. TPT, Ch. 2

Behind the bench

The Golden State Warriors may go down in history as the launchpad for Stephen Curry, but let's not forget another key player in its success. Rick Welts, the openly gay president and chief of operations for the team, is profiled in "Real Sports With Bryant Gumbel." 9 p.m. HBO

Neal Justin