Johnny Galecki is an American actor. He played Leonard Hofstadter in the CBS sitcom The Big Bang Theory and David Healy in the ABC sitcom Roseanne. Galecki also appeared in the films National Lampoon's Christmas Vacation, Prancer, Suicide Kings, I Know What You Did Last Summer, Bookies, In Time, and Rings.Get a short note from me each week with what I've learned from interviewing some of the smartest people in the world -- the best inspiration, eduction, access to events, perks, finds, free stuff and more to help you improve your life and business: https://www.behindthebrand.tv/vip: Get Behind the Brand and Subscribe! http://bit.ly/GetBehindtheBrandHere are my personal favorite Behind the Brand playlists:1. Behind the Brand full-length episodes: http://bit.ly/BTBfull-length2. The BEST advice from some of the most successful entrepreneurs: http://bit.ly/supersmartpeople3. 5 Minutes or less with some of the smartest people on the planet http://bit.ly/BTBunder5min---------------------More? Get Behind the Brand on...Instagram: http://instagram.com/1goodbrainTwitter: https://twitter.com/BryanElliottFacebook: http://fb.com/BehindtheBrandFor business inquiries: producer@thegoodbrain.comSee my film and commercial production work here: http://bit.ly/thegoodbrainworkSupport the show