Last time my parents went to Disneyland they got park hoppers through a guy on ebay. I guess it was kind of a PITA (had to meet him early in the morning and give him the tix back at night). But it was cheaper.
Go to www.mousesavers.com. It's a fantastic website that tells you every discount on Disneyland (and area) hotels, car rentals, park tickets and restaurants. I have save hundreds of bucks on trips to both Disneyworld and Disneyland thanks to this site. Hope you can, too!
Do you perhaps have hotel points? We went earlier this year to D World, and stayed at a Marriott near the park. We were able to use Marriott points to purchase a Marriott gift certificate, then purchase Disney tix through the concierge! It was awesome...but I realize this only applies for those who have a LOT of hotel points (my DH travels a LOT).
Unfortunately, no - I don't have enough hotel points. I cannot believe how tightly Disney control its tix and the tix price. They are really trying to get you to go for more than 1 day. But thank you everyone for your suggestions!!