Nope.

Phantom Skinz on the order, though. I hate cases, can't stand the bulk they add. Then again, most of my phones haven't been my own....

 

If you do decide to get a case. Consider supporting this website.

Phandroid - #1 Store for G1 Accessories

 

I picked up a case from the Verizon store when I purchased my phone. It doesn't add that much bulk or mass, and it keeps my phone secure and protected.

 

I got a gadget guard full body and screen protector (its like a clear screen protector that covers almost the whole phone) off of ebay for $14 with a car charger. It was a little tricky to put on, but it works great so far. Adds almost no weight/size and the touch screen is still about 98% as responsive. I have never used a case for a phone, but I figure that when this thing gets funky in 6 months to a year, I can peel it off and it will be like having a new eris.