Gary Busey Files for Bankruptcy -- I'm Really REALLY Broke

Gary Busey -- who's starred in more than 70 movies -- has less than $50,000 to his name ... and more than $500,000 in various debts ... this according to official documents obtained by TMZ.

67-year-old Busey filed for Chapter 7 bankruptcy in California yesterday. Busey checked the box showing he has less than $50,000 in assets ... and somewhere between $500,000 and $1,000,000 in various debts.

In the docs, Busey indicates he might owe money to everyone from the IRS ... to various lawyers ... UCLA Medical Center ... Wells Fargo ... L.A. County Waterworks Districts ... and a storage company.

He also notes that he might owe money to a woman named Carla Loeffler, who sued Busey for allegedly attacking her at a Tulsa airport back in May.

Interestingly, we shot Gary out in Malibu on Monday -- a day before he filed -- and he didn't seem all that fazed by the whole bankruptcy thing ... dancing his face off in a parking lot.