I came across the Lego Sega Genesis in the Mall of America's Lego store while idly browsing the shelves. I'm not really into Lego, but I am into plastic Sega stuff that I don't have space for, so I picked it up.
There he is.
Entombed in the first layer of Lego bricks is this Sonic face, which can only be seen after completion by removing the top of console.
Altogether, this thing took most of my morning to complete. I get why people like Lego, since it's basically a 3D puzzle (except most of the challenge comes from finding the tiny pieces you need in the big pile of other tiny pieces), but this wasn't for me. It's fun though.