Harvey Star Jim Parsons Shares His Addiction-Kicking Secrets on the Late Show

Before he hits the Broadway stage in Harvey beginning May 18, Jim Parsons stopped by the Late Show set for a hard-hitting chat with host David Letterman. Letterman got the Big Bang Theory star to reveal his age after commenting on his (deceptively!) youthful appearance, then the pair moved on to the hot topic of kicking nasty habits. For his part, Parsons spilled on his many years as a cigarette smoker, the sneaky way a doctor got him to give it up, and the healthier addictions he's since had to cut back on. Click on below to get up close and personal with Jim Parsons.