Johnny galecki biography roseanne

While he's only barely into his 40s, Johnny Galecki is already one of the biggest television stars of all-time.

He's been fortunate enough to score major and memorable roles on two extraordinarily popular shows: In the '90s, he played David Healy on Roseanne, and from 2007 to the president, he's best known for portraying experimental physicist Dr.

Leonard Hofstadter on CBS's indefatigable nerd-com The Big Bang Theory. Along the way, he's also co-starred in a bunch of huge Hollywood hits, from Rings to I Know What You Did Last Summer to Hancock to Vanilla Sky to National Lampoon's Christmas Vacation, a perennial holiday favorite.

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In other words, Johnny Galecki is always on our screens and he has been for the better part of three decades now. Despite that prominence, he leads a fairly quiet life free of tabloid interference and major scandal. Here then are some fascinating stories you may not have heard