There are a few, here are the ones I know:
Forgot About Dre
What's The Difference
Guilty Conscience
B***h Please 2
Say What U Say
Encore / Curtains Down
Old Time's Sake
Hell Breaks Loose
Crack A Bottle
I Need A Doctor
nobody its just eminem but Dr. dre features in the clip
Dr. Dre signed Eminem to his record label, Aftermath.
Eminem has a song out called Crack A Bottle with Dr Dre and 50 Cent. I believe there is a video on YouTube.
It's Called 'I Need A Doctor'. Skylar Grey is also in it. She sings the chorus.
Dr. Dre signed him to Aftermath/Interscope.
Eminem and Dr Dre released the song "Forgot About Dre" on the 29th of January 2000, from the album titled "2001". The song reached number #25 on the chart, it was produced by Dr. Dre and Mel-Man.
Dr Dre
nobody its just eminem but Dr. dre features in the clip
Dr. Dre signed Eminem to his record label, Aftermath.
Eminem has a song out called Crack A Bottle with Dr Dre and 50 Cent. I believe there is a video on YouTube.
Eminem
Dr. Dre was Eminem's mentor
He called in to a radio station while Dr Dre was there and started rapping, Dr Dre then told him that they would like to meet.
I am not sure if this is the song you are talking about but in the song "Criminal", there is a brief skit in the middle of the song about Eminem and Dr. Dre robbing a bank and as Eminem is walking into the bank he whistles. Hope this helps/
Proof was Eminem's friend. Dr. Dre is Eminem's mentor (and friend, too though) So Eminem would likely admire Dre most for rap.
Dr. Dre
Dr dre is a rappre and a record producer. shady is eminem himself