Hmm...
Boy
Best/Favorite: An Cat Dubh/Into The Heart
Worst: Stories For Boys
Most Overrated: I Will Follow
Most Underrated: Shadows And Tall Trees
October
Best/Favorite: Gloria
Worst: Is That All?
Most Overrated: Rejoice
Most Underrated: I Fall Down
War
Best/Favorite: Surrender
Worst: Drowning Man
Most Overrated: Two Hearts Beat As One
Most Underrated: Red Light
Unforgettable Fire
Best/Favorite: A Sort Of Homecoming
Worst: Indian Summer Sky
Most Overrated: Bad (the live version though is amazing
)
Most Underrated: Promenade
Joshua Tree
Best/Favorite: Trip Through Your Wires
Worst: Exit (much better live)
Most Overrated: With Or Without You
Most Underrated: Trip Through Your Wires
Rattle & Hum
Best/Favorite: Hawkmoon 269
Worst: Love Rescue Me
Most Overrated: All I Want Is You (love it, but it's not THAT good)
Most Underrated: When Love Comes To Town
Achtung Baby
Best/Favorite: Mysterious Ways
Worst: Love Is Blindness
Most Overrated: Love Is Blindness
Most Underrated: Even Better Than The Real Thing
Zooropa
Best/Favorite: Zooropa
Worst: The Wanderer
Most Overrated: The First Time
Most Underrated: Some Days Are Better Than Others
Passengers
Best/Favorite: Beach Sequence
Worst: Elvis Ate America
Most Overrated: Miss Sarajevo (it's brilliant, but not the best on the album, as so many claim it is)
Most Underrated: Beach Sequence
Pop
Best/Favorite: Wake Up Dead Man
Worst: Miami
Most Overrated: Gone (much better live, and I actually prefer the best of mix)
Most Underrated: The Playboy Mansion
ATYCLB
Best/Favorite: Beautiful Day
Worst: Grace
Most Overrated: Stuck In A Moment
Most Underrated: Wild Honey
HTDAAB
Best/Favorite: City Of Blinding Lights
Worst: Original Of The Species
Most Overrated: Original Of The Species
Most Underrated: A Man And A Woman
As for U2 in general...
Songs
Best/Favorite: Zooropa
Worst: Is That All?
Most Overrated: Original Of The Species
Most Underrated: Trip Through Your Wires
Albums
Best/Favorite: Zooropa
Worst: Unforgettable Fire
Most Overrated: Achtung Baby
Most Underrated: Zooropa