Gaga gave Colby O'Donis a #1 hit.

Has he ever done something else than Just Dance btw?

I don't think he did.

Juicy J

Yes he had a huge smash with queen of pop Brooke hogan.

Juicy J has an Oscar tho

Bruno gave B.o.B his first (and only) #1 and he also wrote a massive hit for Cee Lo.

Yes. She gave Shellback his first #1

She helped Rihanna to get another num. 1 in US

She gave Calvin Harris his first #1

And Mikky Ekko his first top 3

No, but she helped Superbass become huge

Beyonce gave one to Slim Thug. Rihanna gave one to Calvin Harris.

Drake too

Janet hasn't gave anyone a number 1, all hers are solo.

But she did give up the iconic Slave For You for Britney, Helped Michael with the legendary Scream song and video and helped the rapper Q-tip earn a grammy with her Got Til It's Gone song, and allowed Justin Timberlakes career to keep flourishing after superbowl by taking all the blame.

Generous Goddess

Oh yeaahhh hnnn forgot about WMN?

Don't forget Right Round with Flo Rida and Kesha.