Movie Premiers?

Does anyone know how I could get tickets to a movie premiere in LA?
I’m seriously considering taking a real holiday and LA seems to be the place to go, as I could combine work with pleasure (ie. I’d feel less guilty) by going to Domain Fest.
I’ve no idea what the lineup for Domain Fest will be like, but it should be interesting and it would make a good excuse 🙂
So earlier this evening I did a bit of research into flights and hotels. Aer Lingus have some keenly priced tickets to LA at the moment, so I could probably get a return flight for under €400. Hotel prices vary considerably, but a quick search on 1800 Hotels did bear some fruit.
Of course I’d like to actually relax and do touristy things, such as seeing all the famous places and spending money that I don’t really have (aren’t credit cards great?). As Hollywood is, well, Hollywood and I love films a movie premiere would be a bonus, but is that even possible?
Thoughts anyone?