From one Christmas special to another...
Phineas and Ferb's Christmas Vacation
This was just awesome. Dr. Doofenshmirtz was at his brilliant best again ('And a partridge on an evil scientist. That's not even a play on words!'
), the songs were great, and the absolute best part was
Spoiler Below when Baljeet was at Wendy Stinglehopper's house. She noticed the mistletoe above and kissed him... causing Baljeet to do a dip-smooch on Wendy!