Tiffani Thiessen was not impressed with Mr. Belding in 'Today's 'Saved by the Bell' mini-reunion [VIDEO]

Nostalgic 90s fans on the lookout for a "Saved by the Bell" reunion might be a little disturbed by Kelly Kapowski's lackluster reaction to seeing her high school principal on the "Today" show Tuesday morning.

There to promote her role on USA's "White Collar," Tiffani Thiessen was about to take part in a classic TV trivia challenge when Dennis Haskins took to the stage. Thiessen, who faced the cameras with a muted, forced smile, did not look particularly impressed.

Haskins told TMZ last month that "Saved by the Bell" fans "deserved" a reunion, while Mark-Paul Gosselaar reprised his role as Zack Morris on a 2009 episode of "Late Night with Jimmy Fallon."