U2 returned to the MTV airwaves Monday with the premiere of "Sweetest Thing," the band's latest video for a track from its upcoming greatest hits compilation.

As we previously reported (see [article id="1426485"]"U2 Joined By Boyzone For 'Sweetest Thing' Video"[/article]), the clip for the song features fellow Irish music posters Boyzone, although the vocal group does not actually turn up on the song.

"U2: the Best of 1980 to 1990," the band's first greatest hits collection, features well-known gems like "Pride (In the Name of Love)," "With or Without You," and "Sunday Bloody Sunday." The album also carries "Sweetest Thing," a b-side that frontman Bono wrote for his wife Ally more than a decade ago.

[article id="1440597"]"It was written during the album sessions for 'The Joshua Tree,'"[/article] Bono explained, [article id="1440597"]"and it was Ally's birthday and I didn't make it [home] for the birthday. So, I wanted to write her

a little sweet song, but it ended up a little bit sour as all the best love songs are. I was like, 'I can't write just straight love songs, they make me want to throw-up.'" [28.8 RealVideo][/article]

Longtime U2 fans may recognize the young man on cover of the upcoming compilation. It's Peter, the younger brother of a friend of the band whose photo graces the covers of two of the band's earliest efforts, "Boy" and "War."