Wow. Just wow. I'm a huge fan of the 'Fast and Furious' movies, and to see Vin Diesel start singing to Katy Perry is quite a surprise to me. Didn't realize that he had it in him.
One of the things 'Riddick' has going for it is that it didn't cost too much. So while its opening weekend may be a little less than impressive, it doesn't have that far to go to make a profit. It's little victories like this that make this, one of the slowest most stagnant movie weekends of the year, more palatable.