Yeah, I was gonna say Mac Dre and Snoop are on the apperances. The track called "Executives" with Playboy "dub" W and Lucky 7. I don't know much about Lucky 7, but Playboy W was supposed to have a CD out a LONG time ago. I saw Playboy W at The Last Day Saloon in the 707 and the radio station people told me that he had stage fright and couldn't perform because he's never done a show before - this was after the song started playin on the radio (98.7 and 107.1 in Santa Rosa) I think the two of them are from Santa Rosa and from what I know Playboy W didn't even meet Snoop, just paid him somethin like 3 G'z for a verse and put it on the track w/Mac Dre. If you listen to the track none of the rappers acknowledge the other rappers. That's my two cents about it.
In terms of the two I'd like to see together, I wanna go with Nickatina and E-40 (since Mac Dre and E-40 never did anythign together)