I noticed that NBC is showing HD commercials during The Biggest Loser. Have they been showing HD commercials during SD shows? (I don't watch SD on NBC so I wouldn't know.) I thought only Fox did that.

I believe that I've seen HD commercials on Deal or No Deal (promos for other shows), but I might be wrong...I don't pay a ton of attention to commercials...

Makes sense- the commercials are the only important thing anyways. I'm surprised they've been showing so many commercials where it's a windowbox of a 4x3 letterboxed picture- those are embarrassing!

I've even seen HD commercials on Bravo where actual HD programming is scarce.

NBC also sends down HD commercials and network promos on SD shows like Last Call w/ Carson Daly. I've seen the 'nbc.com' promo in HD along with regular ads and promos.

I'd say it has something to do with the broadcast changes coming b/c the DTV transition. NBC used to show letterboxed promos but since regular programming is changing to 4:3, the commercials will also be 4:3.