Live' veterans participated in a "Tonight Show Joke Off," a riff on SNL's "Weekend Update" segment during which they battled it out for the best punchlines.

Also announced on Thursday, Cher, Lauryn Hill, Dave Grohl, Snoop Dogg, St. Vincent and Wyclef Jean have joined the party of ...

In a feast of special programming, NBC is celebrating the 50th anniversary of “Saturday Night Live” this weekend.