The fourth season of Weeds began on Monday night, and the comedy's season premiere earned Showtime record ratings. With 1.3 million viewers, "Mother Thinks the Birds are After Her" is officially the most-watched season premiere of any Showtime series to date. Weeds broke the record formerly held by the season two premiere of Dexter, which had one million viewers.

Showtime's Secret Diary of a Call Girl also brought in a significant audience. The drama earned 949,000 viewers, setting a record for the highest-rated series premiere on the cable network. The L Word's series premiere was the previous record-holder.