Among the things overlooked on Lindsay Lohan's to-do list in 2009: rehab and paying taxes. TMZ reports that the IRS has obtained a $93,000 lien against the actress because she never got around to filing her federal return. If she doesn't pay up, the agency can seize any homes, cars, or cash that she has on hand, notes the website. Maybe the recent Playboy gig paid well? (More Lindsay Lohan stories.)