TMZ spotted the "Lost Boys" at the Madden NFL '08 party at Les Deux last night, and while we're happy they're still alive, the guys aren't looking exactly chipper. Sportin' a little too much hair dye and some overworked eyebrows, Haim was a bit jittery when talking to our photogs ... looking more like he'd rather make a fast getaway.

Another former teen idol, Backstreet Boy AJ McLean, was at the party too, where the recovering alcoholic said of Britney Spears, "I wish I could just sit her down and talk to her," as Amy Winehouse's "Rehab" ironically played in the background.

Also at the party, onetime Britney plaything Matt Leinart, "Heroes'" Hiro -- Masi Oka, Tom Green, Bow Wow and b-baller John Salley.