User blog comment:Invasor Zim 10/A new cheese episode?/@comment-1852035-20120112055936/@comment-406459-20120112061131

Ms. Tisdale posted a picture of a Phineas and Ferb recording session today. According to Just Jared Jr., she was indeed recording today. Taking a look at the photo she posted on Instagram, the episode title on the script in front of her appears to be "Monsters from the Id", which is a reference to a quote from Forbidden Planet. This matches a listing on Zap2It, so it's likely she was doing the final ADR (advanced dialog replacement) for Candace's lines for the episode in question.