Hidden\uncredited background vocals on Dre tracks...

[Okka]

he says alil something on D.O.C.s Judgement day track on Deuce that hes not credited for...he produced it too

He says somethin like "Welcome to California my nigga, the home of palm trees & the sticky green killa"

[F-cisco]

Since we are on the subject, If you listen to the first two Mack 10 lp's you can hear cube all over them. However, Priority only credited him on the songs were he actually raps.

[Lil Jay]

not a Dre track, but Kurupt adlibs on the Nas & Nate Dogg "The Good Life". The original version had a Kurupt verse but they took it out but left the ads

[Low Key]

On The Next Episode at 1:43 after Dre says "With DOC in the back sippin on Yak", you can hear DOC say "Yup".

[doubletrouble™]

u sure i think that what up dr. dre was said by kurupt... peace

You can stop thinking coz it was Kurupt 

[topshotta]

Dre on "Who Knew" ( sounds like him saying "Wasn't me, Slim Shady said to do it again!" )

Then there's the obvious ones...

hahahaha, damn where's your hearin aid at man? 
that's the most obvious shit i've heard ever, it's em who says that, nooooo doubt! 

[GangstaBoogy]

oh Dre had a lil intro on "Special" by The Game
and a quick adlib on the title track before the 2nd verse

[Larrabee]

Dre on "Who Knew" ( sounds like him saying "Wasn't me, Slim Shady said to do it again!" )

Then there's the obvious ones...

hahahaha, damn where's your hearin aid at man?
that's the most obvious shit i've heard ever, it's em who says that, nooooo doubt!

Try listening to that part closely, you'll hear 2 layers of vocals saying that line. I know that Em does one of them, and it sounds like Dre's voice in the background.

[Paul]

nate dogg is uncredited in the next episode

doesnt dre speak on the start of respect by dogg pound on dogg food??

[Okka]

doesnt dre speak on the start of respect by dogg pound on dogg food??

Yes he does, and in "Let's Play House" too...

[Mygla]

nate dogg is uncredited in the next episode

yes