Late Night Highlights: Lady Gaga Tells Jay Leno About Her Madonna Controversy

Monday was an exciting night for the late night circuit because the Grammys' biggest stars were out to discuss their wins and losses. Lady Gaga bragged about her victories to Jay Leno before finally addressing all of those comparisons to Madonna. Meanwhile, Conan and Chelsea Handler double-teamed Justin Bieber and forced him to explain his Grammy losses... twice. Elsewhere, Dianna Agron talked about her special moment in the Grammy bathroom with Beyonce and January Jones hated on Valentine's Day.

4. Bathroom Break with Beyonce

Dianna Agron stopped by Jimmy Kimmel Live! last night to discuss the Grammy moment she shared in the bathroom with superstar Beyonce and how she was hand-picked by Steven Spielberg for her latest project.

3. January Jones Can't Contain Her Hatred For Valentine's Day

Really. Just watch her appearance on Late Night with Jimmy Fallon in which she was forced to discuss her negative feelings for Cupid's holiday before the pair discussed their strange Golden Globe moment.

2. Valentine's Day With the Biebs

Justin Bieber spent his special day with Conan O'Brien, where he threw his management under the bus for scheduling him on a talk show before discussing his tremendous disappointment about losing the Grammys this weekend. (First video) And then Justin Bieber stopped by Chelsea Lately where the pop star was forced to talk about his Grammy loss again and his plans for the holiday. (Second video)

1. How to Explain Lady Gaga to Your Unhip Dad: A Tutorial

Lady Gaga stopped by The Tonight Show (with her new Grammys) to explain herself, the message of her new single "Born This Way," and the Madonna controversy about the song to Jay Leno.