Just a quick heads up: Today is the last day for transfer students to file for a UC Davis Regents Scholarship. Davis is the only UC to make transfers apply in advance. Click here to get to the Davis regents link.
You will need a 3.8 GPA, plus one letter of recommendation by today, so if you have not been on top of that it could be a hindrance. If you think the letter may be late, I suggest you still try and submit, then contact the Regents office and see what advice they might have for you.
The amount is hefty — $7,500 every year for two years.
UPDATE 2019: Davis no longer requires you to apply for a Regents.