Mario Lopez and Mark-Paul Gosselaar ("Saved by the Bell")

Current "White Collar" star Tiffani Thiessen squeezed plenty of crushable appeal out of those Keds and scrunchies as Kelly Kapowski, but the real "Saved by the Bell" poster boys were cunning preppy Zack Morris (Gosselaar) and dimple-flashing jock A.C. Slater (Lopez). The two have gone on to remarkably consistent work in showbiz, from Lopez's hosting stints on "America's Best Dance Crew" and "Access Hollywood" to Gosselaar's "NYPD Blue" tenure and current residence on the TNT hit "Franklin & Bash." And according to informal surveys and general observation, they still make hearts go a-flutter.

Bing: Mario Lopez 

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(NBC Universal)