What started out as a late night career over on NBC will end tonight on CBS when David Letterman signs off from the "Late Show."

Letterman has been working in late night for more than 30 years. 

The Foo Fighters are set to be the last musical act on Letterman's show, according to Rolling Stone. 

According to CNN, his cross-network rivals have had nothing but fantastic and heart warming things to say about the comedy legend, who recently broke Johnny Carson's record of longest running Late Night host.

On "Jimmy Kimmel Live!" Tuesay night, the ABC host spent more than six minutes of monologue on his thoughts and memories of David Letterman, which included the commanding presence he had in the young host's life growing up.

Kimmel was on the verge of tears during the whole segment and even urged his audience not to watch his own show Wednesday night, but rather tune into Letterman and see what all the fuss is about.

"We had no VCR, so I would have David Letterman viewing parties at my house in the middle of the night," Kimmel shared on his show. "My friends who also loved the show would come over -- my parents would be asleep -- at midnight and we would drink soda and watch the show. Looking back, I figured out why none of the girls at school wanted to have sex with me."

NBC's Jimmy Fallon also joined in on the touching tributes and spoke about a surreal revelation he had about his youth while attending school. He showed a prediction his eighth grade teacher printed in his yearbook, showing that James Fallon was destined to grow up and replace David Letterman on the "Late Show."

Fallon comically said he "wants to go to the race track with this teacher."

Rolling Stone also reports several fans and celebrities that have had a few things to say about Letterman over the years, which included the likes of Tina Fey, Tom Brokaw, Michael Keaton and Dave Grohl.

Martin Short had a few comments as well.

"I've always felt that the secret to being on a talk show was to do an imitation of yourself loose at a party - and I really do feel loose when you're sitting in the chair next to Dave," Short said. "He's just right there in the moment with you. We're pretty comfortable with each other, and I have an easy time reacting off of him." 

"The Late Show" will air its final episode on Wednesday at 11:35 p.m. ET.