My HTPC case (SILVERSTONE Black Aluminum Crown Series CW02B-MXR ATX Media Center) is big enough to fit a 12" long video card if necessary. The DVD drive would be install over the back end of the card. The only problem, it's $400.
$400 was more than what I wanted to spend, but it was the only case that meet my particular specifications (it even beat out more expensive HTPC cases). My specifications were:
1. Full size ATX mobo. (12" x 9.6" - larger mobos like Asus Maximus will not fit).
2. Tall enough to fit a Tuniq Tower or larger HSF.
3. 120mm exhaust fan 'cause larger fans can spin slower to move the same amount of air as a smaller fan spinning faster. The default case fan is pretty quiet (~1000 RPM).
4. Enough room in the drive cages for 6 hard drives. The DVD drive does not go into the drive cages.
5. Ventilation to cool the hard drives. This case can fit a 92mm fan (optional) under each of the drive cages drawing air from underneath the case itself.
6. No dumbass transparent window for stupid lights.
Here's the link in case you are interest or if you too cannot find another case that meets your specifications (ie fit a GTX 280):
http://www.newegg.com/Product/Product.aspx?Item=N82E16811163084