FTR, xXx’s chica’s name is Asia Argento, and she also made a semi-autobiographical film that is pretty much porn, especially since the “actors” were engaging in actual penetration.
She has some interesting tattoos.
In many scenes, she (Asia) looked just like Moira Kelly, except that I highly doubt Moira Kelly would bare her skin like that.
Entertainment Weekly review of Agent Cody Banks said it all for me:
I don’t get Vin Diesel’s appeal. A friend (who likes his looks) describes him as “box of rocks.” We saw xXx only because it was set in Prague and we’d just been to the city a few months before the movie came out.
Heh… I like the EW quote you posted. I would add that Frankie Muniz is at least a better actor than ol’ “box of rocks.” 
To give credit where it’s due, Diesel was actually pretty good in Pitch Black, as another poster pointed out. However, it bears noting that that was an ensemble cast (like Alien or The Abyss), and Diesel had to do very little acting… or talking, for that matter. He had a nice bit at the end, but again, it was more action than acting. He doesn’t have the chops to support a lead role all on his lonesome, it seems.
Vin Diesel…
~droooolllll~
For me it’s his beautiful bald head and his voice. I know he is not a great actor and xXx was fluff, but damn he’s some eye candy.
You noticed that too? I was watching it and thinking “I know her. Where do I know her?” and couldn’t figure it out. I discovered her name, and thought “Never heard of her. Why do I know her?”
I went home and looked up pics of her on the net, crikey dickens she’s done some racy stuff, and eventually it hit me - she looks like Moira Kelly (who I’ve had a crush on since Cutting Edge). Very eerily similar looking actually.
For a much better (though by no means amazing) performance by Mr. Diesel, go see Boiler Room.
I will say one thing about xXx: it pitched well. Somebody walked into a studio office and said four words: “Extreme Sports James Bond.” The studio exec replied “Here’s $50 million. Come back when you need more.”
I’m an aspiring screenwriter. “Extreme Sports James Bond” would have never occurred to me in a million years.
I will now fling myself out of a window.