If you could invite any famous person dead or alive, who would you invite and why?

I would invite Eminem which is a singer that raps. I would invite him because first of all he is alive so I am able to invite him and second of all because he sings my  favorite songs like "not alive" and "love the way you lie" which also involves Rihanna in the song she is also a very good singer, but I would still prefer Eminem not to offend Rihanna or anything because she has a great voice. Just to say I admire him!