Twitter Users Mixed Over Black Eyed Peas' Halftime Show at Super Bowl XLV

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Tweeters including "Family Guy" creator Seth MacFarlane rushed to express their opinion about the group's performance, calling it everything from "spectacular" to "horrid."

Twitter users rushed to give their opinion of the Super Bowl XLV halftime show featuring Black Eyed Peas, Slash and Usher -- and the comments were decidedly mixed.

"This Super Bowl halftime event looks like the talent show from Revenge of the Nerds," tweeted "Family Guy" creator Seth MacFarlane.

Teen pop sensation Justin Bieber also weighed in, praising Usher: "@BEP and @Slash and my big bro @UsherRaymondIV - #proud of u my dude. that split was crazy. #Halftimeshow."

"Wow Black Eyed Peas killed it!!! Fergie looks sooo gorge!" tweeted Kim Kardashian.

Meanwhile, other non-celebrities didn’t hold back in expressing their opinions of the performance.

"If this was American Idol instead of the Super Bowl halftime show, the Black Eyed Peas would not be going to Hollywood. Horrid," wrote one.

Another referenced on one of the Peas' hits, quipping: "#igottafeeling they regret picking black eyed peasfor the halftime show#terrible."

"Halftime showequals epic fail...Black eyed peas? Really?! I mean really?! Come on!" another tweeted.

"I really hope that the black eyed peasdid that halftime showprobono because that was just awful...#reasonswhythemusicindustry=poop," griped a tweeter.

"Nothing says traditional American values more than... the Black Eyed Peas with full robovoice at the Superbowl halftime show," joked another.

Dallas' Super Bowl-themed site SB Nation tweeted that the Peas were boring and confusing.

Some of the negative comments specifically targeted Peas singer Fergie.

The Hollywood Reporter's sister publication Billboard tweeted: "1 final thought: gotta love Fergie Ferg, but her voice sounded a little strained. was futuristic swagger but Stacy stumbled a bit."

Added another user: "Can't say I'm a fan of Black Eyed Peas halftime show. Girl can't sing so hot."

Still, the Peas had several supporters. Gushed one: "I am completely speechless, this halftime showis beyoooond spectacular. A++++++ Black Eyed Peas."

Another added: "Oh My Gosh!!!! Halftime showwas off the hook!!! Black Eyed Peas& Usher killed it!! #superbowl"

One tweeter wasn't as laudatory but still liked the show and the combination of musicians: "Black Eyed Peasshow was solid. Nice integration of Slash, Usher, and the band. It was a good halftime show."

Another topic among the Twitterverse was the Peas' choice of costume, featuring a futuristic mish-mash of sparkles and lights: "And after that halftime show the Black Eyed Peaslived out the rest of their days fighting crime in outer space."

Quipped another: "For those keeping score, 75% of the power to the Black Eyed Peas' #Superbowl halftime showcostumes was provided by alternative energy."

The Peas' medley featured seven of their hits, including "Let's Get It Started" (the more PC radio version of the original song, "Let's Get Retarded"), "I Gotta Feeling," "Boom Boom Pow," "Pump It" (with Slash), "Where Is the Love" and "The Time of My Life." Usher performed "OMG," which features the Peas'

Fergie also covered Guns N Roses' "Sweet Child O' Mine" with Slash. Interestingly, Slash recently commented that he wouldn't let Glee -- Fox's musical series which airs after the Super Bowl -- cover his songs.

Glee is worse than Grease, and Grease is bad enough,” he said in an interview. Glee creator Ryan Murphy’s response: “Usually I find that people who make those comments, their careers are over; they’re uneducated and quite stupid.” 

However, Fergie and Slash have performed Guns N Roses songs together before, as recently as last summer's Sunset Strip Music Festival with "Paradise City."