I just saw a commercial, it was either a bank commercial or an insurance commercial that featured a guy and his puppet doppelganger, I'm trying to find it on YouTube.
I wonder if JHC was involved with this one, because the puppet looked very much like a Muppet (and his voice sounded familiar as well, but I couldn't place it).
It was clearly a combination of traditional puppetry and CGI, because the arm rods were clearly visible throughout, but the puppet's eyebrows were obviously digitally manipulated.