Critic's corner

*CBS' The Big Bang Theory (tonight, 8 ET/PT) repeats one of its funniest episodes, and one of the best examples of how well this show developed over the season, as Penny is dragooned into nursing a sick Sheldon. It's hard to imagine how Emmy voters could watch TV and not rank this show among the top 10 sitcoms -- but then, Emmy voters don't actually watch television, which makes the oversight less difficult to imagine.

*Bones (Fox, 8 ET/PT) has a fine repeat also, as a body found in the Jeffersonian incinerator forces the team to question whether someone at the institution is connected to the season-long serial killer. In the end, that story didn't work out so well, but it plays ...