Jay Leno's last night hosting The Tonight Show

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Jay Leno will host for the last time "The Tonight Show" tonight on NBC as the network replaces the longtime host with Jimmy Fallon.

Billy Crystal who appeared as Leno's first guest in 1992 will appear as well as country music superstar Garth Brooks.

"The Tonight Show" will be run with new episodes with Jimmy Fallon beginning Feb. 17.