Depressed by the recent spate of bad news - chaos in Wisconsin, civil war in Libya, hell on earth in Japan?
Take a break with some YouTube clips of the first appearances of well-known comedians on The Tonight Show.
First up, the incomparable Steven Wright.
Next in the queue, Jerry Seinfeld, who gets a lukewarm reception and is not invited to the couch. (A couch invite from Johnny was a sign that the comic had done especially well.)
Here's a surprisingly funny and low-key Ellen DeGeneres.
Finally, Johnny introduces the man who will one day replace him, Jay Leno.
Want more? Here's a montage of other comics' Tonight Show debuts.
Feel better now? Of course you do.