everybody loves raymond ed 16 which covered the dark mothers day arc. ed 28 is good too but this ones just the best.
All in all it's not a perfect show--the biggest problem is probably the pacing; episodes 3 and 4 are pretty slow, and the final episodes are a little rushed--but it's some nice, colorful, cheery fun. Would definitely recommend.
Well I already see Brotherhood, Madoka, and Bake's first OP got posted so there go my top favorites. I'll throw in a few Spoiler: Fullmetal Alchemist ED 2 Spoiler: Death Parade ED Spoiler: Steins;Gate ED