Eminem Lip-Sync? 'MMLP2' rapper blasted on Twitter for 'Shady' SNL gig, did Em fake live 'Berzerk' performance alongside Rick Rubin à la Ashlee Simpson? [WATCH]

Eminem performed his new hit single "Berzerk" on Saturday evening's episode of SNL. And according to TMZ and several Twitter fans, the MMLP2 rapper was clearly lip-syncing. Are Mstars readers disappointed in Slim Shady if the rumors are indeed true?

Check out Eminem's viral performance here:

But as TMZ recently pointed out:

Barring some crazy rift in the space-time continuum, Eminem  unquestionably lip-synced his performance on "SNL" this weekend... [He] didn't really try to hide it either, pulling the mic away from his mouth several times while his "vocals" continued at full volume.

And here's "proof" -

Several Twitter fans also picked-up on the alleged lip-syncing... and they weren't very happy about it:

@imbeccable: "never thought i'd see the day when eminem would lip sync on national tv, we really have entered a brave new world."

@erick_marshall: "Lip sync and winter coat inside... bravo Eminem AKA the only guy who still bleach is hair. #snl."

@secret_weapon84: "Oh... it's ok to lip sync flows now, eminem? Lame. #SNL."

@johngaudes: "Really cool of Rick Rubin to show up and watch Eminem lip sync embarrassingly badly."

@PaulTappay: "Oh Eminem did you just pull off the worst lip sync since Milli Vanilli? Yup. Appears so."

@nquenqua: "Hey eminem - you don't get to be nasty and mean and angry and lip sync too."

If SNL fans remember, Ashlee Simpson had a rather catastrophic lip-syncing experience onstage a few years ago...

So if Eminem DID lip-sync, he pulled it off quite nicely (at least compared to Simpson). What do Mstars fans think?