If you're interested, use this "friend referral" link below (I can get free groupon cash with it if it's your first time buying through Groupon). :D
Los Angeles Deals: Packages & LA Things to Do | Groupon Deals
It's under the deals in the Inland Empire location.
2 tickets for $23 and you have to use them by 1/31/12.
All the info is listed under the deal itself on the site.
Just got my tickets! :)