Hum... Eminem and Bruno Mars. What a pairing. Why do I say that? Well... it all has to do with another rapper named Tyler the Creator. See, in a song named "Yonkers," he pulled a 90s Eminem style shoutout to Bruno Mars. Even though Mars said he was OK with it, this happened:
Bruno Mars Files Lawsuit | Flavour Magazine
Such is the way of popular artists... anyway, for his music itself: He sounds not much different from everyone else, I don't get where the popularity is. I guess because the lazy song is catchy. But I don't really end up with the radio turned on too much anymore.
For the Drake and Lil Wayne mentions in the thread: They showed talent in Eminem's stuff. However I think they need a couple more years to show it in their own music, though they are both better than other things going around today, I'll grant it. Understand, it's very rare to actually find someone these days who both has awesome talent in the rap/hip-hop genre and who's actually popular like Eminem, so there's actually going to be some shoes to fill later on I'm guessing. No, I'm not a "hater" or a hipster or whatever even though I enjoy 90s more than today in such music... it's just my opinion. A large amount of the music's evolved to being more about the party instead of stories like it used to be.... and actually still is when you go a little away from mainstream.
Oh, and while I do agree with the "sounds the same" part, but it's excused here: Eminem sounds like himself because of his own use of voices in his work to mimic someone else in skits. It provides a voice to distinguish when you listen to himself talking, enabling you to point out if he's serious or not. It should be yourself telling your own story, after all.