This was a tough sell for me. I went into a GAME store to pick up Alice: Madness Returns (and uh... Transformers: Dark of the Moon... hey, I'm a TFanboy, ok?!), and the guy behind the counter asked me if I liked Japanese games. I said no. He asked if I liked Bayonetta. I said no. He persisted and asked if I liked Resident Evil. I said... yeah, kinda. And on that fragile thread he went on to explain the game to me in detail. And I still wasn't sold.
I left the store and went to a local cybercafé to do some research, and I was intrigued by the gameplay and the world. So I ended up buying it on top of the other ones I went in there to get, on the promise that I would return with a vengeance if I disliked the game, which seemed quite possible.
And I loved it! In fact, I even called the store to thank the guy for his recommendation. It is sheer fun, stupid, mindless fun, but done really, really well! And the humour? Well, let's just say this is what Duke Nuke Forever should've felt like. It COMPLEMENTS the experience, it doesn't rule over it.
I'd say get it. If I was satisfied, then you sure as (dick) hell will be.