SPECIALS

For better or worse, there’s a sixth installment of “Funny Flubs & Screw-Ups” (8 p.m. CBS), an hour of outtakes hosted by Cheech Marin.

Airing as part of Asian Pacific American Heritage Month, “Great Wall Across the Yangtze” (10 p.m. KCET) examines the construction of the Three Gorges Dam.

If you can’t wait for the barrage of other Pearl Harbor documentaries due this weekend, turn to “Pearl Harbor: Attack on America” (7 p.m. MSNBC), a two-hour program hosted by retired Gen. H. Norman Schwarzkopf.

SERIES

Some shows get all the breaks. The cloying comedy “Three Sisters” (8:30 p.m. NBC) started in January with a lead-in from “Frasier,” and now it follows “Friends.”

Wayne Brady, who deservedly gets his own ABC variety show in August, imitates Britney Spears on “Whose Line Is It Anyway?” (8:30 p.m. ABC).