What! It's a marvellous film! Probably one of the most orignal pieces for years (along with Charlie Kaufman's other recent films, Adaptation and Eternal Sunshine...). Try watching it again, you may just love it!
Personally, I love this film, so quoteable ('This grass is really ****ing lovely' - cue Rhys Ivans stroking a golf green). But, I can see why you may not like it, it can be quite nasty (particularly the beheading of the dog!)
I'd go for 'Jay and Silent Bob stike back'. Not so much a dreadful film, but such a let down compared to Kevin Smith's other efforts. Dogma is hilarious, and Chasing Amy is just untouchable. ...strike back didn't have the story, the characters or the intellegence of his first 4 films.