Comedy?
Sorry, but I didn't think of this as a comedy. Sure there were some points that were funny, but I found most of laughs were in regards to the over the top effects. The movie, though admittedly having tongue firmly in cheek, was relatively serious in its approach. I mean, put it this way: Was "Fight Club" a comedy?
The DVD I bought has a quote saying "funniest horror-comedy since Shaun Of The Dead". It's quite a bizarre comparison. I'd recently seen Return Of The Living Dead and Re-Animator which are much more of a similar style, but even those are much more obviously "comedies" than Sliver.