9/11: The Days After (9pm, History) - The impact of September 11 is examined, focusing on the less-discussed ways it has affected the nation culturally, sociologically, politically and psychologically. The report looks at profiling, hate crimes, and September 11-related illnesses.

Unleashed by Garo (9pm, Sundance) - In this new series, fashion designer Garo Sparo (left) gives fashion makeovers in his New York City studio. Tonight, a newcomer to New York asks for his help, and a rock drummer requests a pair of wings to signify his flight from past demons. Also, drag queen Hedda Lettuce wants something special to mark her 10th anniversary as a performer.  See Adrienne's review here.

Mel Brooks and Dick Cavett Together Again (9pm, HBO) - Conversation between comedy legend Mel Brooks and talk show host Dick Cavett, who share anecdotes about show business and celebrities. Also included: remarks from Carl Reiner, who was in the audience at the Saban Theatre in Beverly Hills, where the show was taped in December 2010.

Tanked (9pm, Animal Planet) - A children's book-themed aquarium for a little boy's bed becomes an emotional roller coaster, and Heather gets revenge on her bosses by scheduling them for a shark dive.

Haven (10pm, Syfy) - A terrifying infection takes down a police officer at the Haven police station, prompting a lockdown that locks in Audrey and Nathan, who suspect that something other than an outbreak is at play.

The word "legend" is probably tossed around too much, but that doesn't mean it doesn't sometimes apply. In the case of Mel Brooks, it applies.

An HBO special airing tonight features Brooks ("The Producers," "Blazing Saddles," "Young Frankenstein") and talk show host Dick Cavett sharing hilarious show business memories.

"Mel Brooks and Dick Cavett Together Again," which airs at 9 p.m., was filmed in December 2010 at Saban Theatre in Los Angeles. Another legend, Carl Reiner, happened to be in the audience and joined in now and then. In the clip below, Reiner shares a memory about his collaboration with Brooks on their famous comedy skit, "The 2000 Year Old Man."