During Commercial Break: Robert Downey Jr.

Robert Downey Jr. and Jimmy goof around while filming The Tonight Show promos.

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The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show including: comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags! You'll also find behind the scenes videos and other great web exclusives.

Local Promos with Robert Downey Jr.

[ansooXP]

Roberts laugh is the most adorable thing ever

[thesheepthatwentmooo]

You will not find a cooler person than Robert Downey Jr.

[Ninaofthes]

I was so focused on Robert I didn't hear a word that Jimmy said ;)

[cozycushins]

Aw Robert Downey Jr. is just loads of fun his facial expressions are hilarious!

[keanehgz]

RDJ has so much style, the term 'swag' will be too derogatory for him.. 

[TheSuspectOnFoot]

1:04 When a teacher asks: Who want's to answer the question?

[AAAAAA-lyqw]

Something about the camera focus at 1:24 makes RDJ look like he's an advertisement for the next scheduled show

[sidchen]

He's over 50 but he's like a 6 year old
Thats why we love him

[SuperLoveLexi]

I love when Jimmy slowly makes his chair go down lol these two are so goofy together .

[SHANKDAWGBABY]

This was a hell of a lot funnier than I expected, especially the last two.

[juliaeve]

Lol I saw a screenshot of 1:05 on tumblr and it was like "what was the context of this?" And then "we will never need context"

[xsparklex]

Love the smile Robert gave at the end..Perfection he is!

[KiraBaka]

Iron Man 4, Iron Man 4, Iron Man 4...

[kojKU]

1:04 when you see a person you know from school.

[delia]

Jimmy's head looked about to explode.

[rawkrXbabee]

RJD is the best ever and with Jimmy, aaaah love it

[gabstermaster]

He's just so cute omg and his laugh and his smile and his sassiness IM ALL ABOUT IT

[jackstaming]

Jimmy just lifts my mood and makes my day much better when I watch his videos.

[worldoftiffanyblair]

I've watched this about 5 times and it's still funny.

[Teerapatkongrat]

My wife can cheat on me if that guy is RDJ lol