Former 'American Idol' contestant Nikki McKibbin has been one of the success stories of 'Celebrity Rehab' (Sun., 9PM ET on VH1). So when Dr. Drew Pinsky and Bob Forrest saw her glazed eyes and slow speech in a video update, they were understandably concerned. Forrest made the trip to check in in McKibbin and see what's going on in her life.

It turns out that she's being medicated with addictive prescription meds like Lithium and Ativan, which was a huge concern for Forrest. McKibbin said she'd been very forthcoming about her past with addiction, so it was a surprise that her doctors were putting her on these particular drugs, though she said these were to wean her off of other drugs.

We're teaming with Vote for the Worst to name the 12 worst 'American Idol' finalists ever. Check back next week to see our pick for number 6.

Name: Nikki McKibbin
Season: 1
Worst Performance: '(There's) Always Something There to Remind Me'
Why We Loved to Hate Her: Long before Tim Urban overstayed his welcome, there was season 1's Nikki McKibbin, the original red-headed "rocker" who, for better or worse (we're going with "worse," in this case), made it all the way to the final 3.

Along the way, McKibbin ruined classic songs like Janis Joplin's 'Piece of my Heart,' landed in the bottom three five weeks in a row and, in 'Idol''s first shocking elimination ever, even managed to outlast then-frontrunner Tamyra Gray.

With additional performances of bar classics like 'I'm the Only One' and 'Black Velvet,' McKibbin set the bar low for future 'Idol' contestants and cemented her place on our list of the worst 'American Idol' finalists ever.

To read more on Nikki McKibbin, head on over to Vote for the Worst.

Some of you may have noticed that there was a little bit of a change in the Top 24 during the Wednesday episode of 'American Idol.' Chris Golightly, who originally auditioned in Los Angeles, made it to the Top 24, and was shown in a group shot toward the end of the episode, but when we had individual shots of the 24 semi-finalists at the very end, he was missing. So what's the story? Turns out, Golightly was less than honest with 'Idol' producers.

After nine seasons, viewers and contestants alike have (or should have) learned one thing: be upfront with 'Idol' producers. Season One contestant Nikki McKibbin was upfront about her stripper past, and was allowed to stay on the show. Frenchie Davis, however, failed to disclose that she posed topless on the web, and was ousted. Golightly's infraction was that he failed to tell producers that he had a record contract.

From faux-hawks, to dye jobs to perms gone wild, 'American Idol' has suffered its share of truly bad hair days -- and no, we're not just talking about Sanjaya.

Despite help from professional stylists, even 'Idol' winners like Kelly Clarkson and Carrie Underwood went for looks that gave new meaning to the phrase "hair don't."

We're counting down the 16 worst 'American Idol' hairdos ever. See all of the hair-raising moments after the jump.

Welcome back to "AI Aftermath," where we explore Idol's past. Each installment, as one more American Idol hopeful is eliminated from the competition, we take a look back at contestants past who were eliminated at the same point. We'll examine how they did on the show and what they've been up to since their eliminations. In honor of Syesha Mercado's elimination this week, we'll be looking at other fourth place finishers.

This week: 3rd place finishers, featuring featuring Nikki McKibbin (Season One), Kimberly Locke (Season Two), Jasmine Trias (Season Three), Vonzell Solomon (Season Four), Elliott Yamin (Season Five) and Melinda Doolittle (Season Six).

Bad performances on 'American Idol' aren't just limited to the audition room.

In just seven seasons, we've seen over a handful of performances bad enough to shut down any karaoke bar in the country -- everything from Carmen Rasmusen's 'Can't Fight the Moonlight' to Jon Peter Lewis' 'A Little Less Conversation.'

The members of Votefortheworst.com (VFTW) recently narrowed down the performances and compiled a definitive list of the top 20 guiltiest 'Idol' pleasures of them all.

Click through the gallery to see their picks. Just don't forget to bring your earplugs.

Like every TV show, 'American Idol' couldn't survive without a headline scandal.

In just seven seasons, 'Idol' has had its fair share of juicy gossip items: nude photos; arrests; wrong numbers -- not to mention Corey Clark's alleged affair with Paula Abdul.

We've compiled a list of the biggest 'Idol' scandals ever. After the jump, click through our gallery to relive moments every 'Idol' wants you to forget.