old Hollywood dadsThey may be dragging oxygen tanks behind them when they walk their daughters down the aisle or go to their sons' baseball games, but these "mature" dads apparently know how to keep the spark alive in their marriages.

From Clint Eastwood to Elton John to Nick Nolte, let's hear it for these fathers who prove that they've got it going on, well into their 60s.

We have a feeling once Hugh Hefner and fiancee Crystal Harris tie the knot, Hef may break the record if he produces another heir...