Lindsay Lohan did a scene with Charlie Sheen for his television show "Anger Management" on Monday.

"She looked surprisingly good and was upbeat and professional," a source told The Daily News. "Lindsay knew her lines cold and her timing was perfect. She was really funny."

The actress, who has developed a reputation as reckless and unprofessional, arrived to the set around 9 a.m., earlier than her call time, making a good first impression, following up a successful fitting on Friday, according to the source. She reportedly posed for photographs and was kind to the cast and crew.

In the episode, Lohan, 26, plays herself as a patient who develops feelings for Sheen's therapist character. There is a bedroom scene and Lohan will only have a few lines, but the shoot is expected to take two days.

The source told the Daily News that Lohan agreed to the cameo after receiving $100,000 from Sheen to cover some of her tax bill.

NASCAR driver Kyle Busch was reportedly also present at Lohan's "Anger Management" taping. Perhaps the actress, often involved in legal trouble for her driving, asked for some lessons?

The episode is scheduled to air in April.

This is not the first time Lohan and Sheen have worked together. The two worked on the upcoming film "Scary Movie 5", which will hit theaters next month.

"I have a kinship with somebody [Lohan] who clearly needs a mentor, whether she wants one or not," Sheen said. "She can continue to hang out with her dress shredding club buddies, or turn to me for some advice from a guy who's been down the road as well as every other side trail on the journey."

Lohan reportedly spent the weekend out at nightclubs before reporting to the set.  According to US Weekly, Lohan spent time at a San Diego club on Friday, and she was then photographed leaving a private club in Santa Monica with rumored boyfriend Avi Snow, on Saturday. Snow is a guitarist in the band City of the Sun.