Drums:
Fire
Life is a Highway (was surprised by drum chart)
Real Wild Child (Cool drums!.. was not expecting it to be fun at all)
Monster
Ghostbusters
(im sure im missing more... I wasn't a fan of breakout's drums)

Guitar:
Really my favorite guitar has to be Short & Sweet.. I like Let's Dance's solo...
There wasn't many hits for Guitar IMO... wasn't a fan of Final Countdown... cool solo but boring strumfest otherwise.

Bass:
Two Princes is my favorite.. that's about it for bass.

Vocals:
Depends on my mood... I like a lot of em though. Especially Crash

-Dig
-Rooftops
-Every Little Thing She Does is Magic
-Naïve
-Monster

As soon as I heard this is the only way to get Incubus into my damn Rock Band game, I knew I had to buy it.

Favorite song? Well, that really depends on the instrument.
Off the top of my head: as a Guitarist I love "Ghostbusters"
(it's such a guilty pleasure!) Taking on vocals I love singing
"Crocodile Rock" and "Dig" (both are challenging in their own way)
The drums on "Life Is A Highway" and playing Bass
during "Rooftops" are both really awesome. :)

Love Ghostbusters but...

for pure enjoyment of the song over playing it

Song 2!

wahooooo

"Summer Of 69".

Definitely "Valerie" by The Zutons!!

So many unknown great songs on Lego:RB.

Personally though, I love "Two Princes" by Spin Doctors. Probably one of my favorite bass lines in the whole RB platform. "Free Fallin'" by Tom Petty is also a great, but easy song.

Dreaming of you for sure.

Breakout for sure. Can't wait for Foo Fighters Pack 4 on May 10th too.

Monster, no contest.