Garry Shandling - Plastic Surgery? Botox?

Comedian Garry Shandling made a recent appearance on the Late Show with David Letterman. He looks nothing like the Garry Shandling I remember. The photo on the left is the recent one, the one on the right from over 6 months ago. If you take a look at the video on Popeater here, you can see that his forehead is frozen. It doesn't move. I think he's had a bit too much Botox, and maybe some filler like Restylane into the facial wrinkles. Also, when did he gain so much weight? I wonder if he is on medical steroids for some reason?

Thanks for reading.
Michigan-based Plastic Surgeon
Anthony Youn, M.D.: