And no wonder. The 49-year-old actor was swarmed by female fans outside the Sunset Boulevard venue, which must feel pretty damn good when you're newly single and approaching the half-century!
Held at arm's distance behind the obligatory barricade, Johnny's fan club were eager just to get a signature and a token look at their celebrity crush.
Deep down, though, we're sure they were all thinking the same thing: "What if? Just what if I could be the new lady by Johnny's side?"
The actor has been keeping a low profile since splitting from long-time partner and mum of his two kids Vanessa Paradis in June.
He's been hard at work in the Rocky Mountains on the set of his upcoming Western film Lone Ranger, due out in mid-2013.
But that doesn't mean Johnny's escaped hook-up rumours.
Since announcing his singledom, the actor has been linked to a plethora of eligible women, including Amber Heard, French actress Eva Green and even his publicist, Robin Baum.