In no particular order mine are:
Bridges In the Sky
2:05 - 2:19
That's my favorite variation to the main theme in that song, but they are all pretty bad ass riffs.
This Is the Life
Opening riff that is repeated throughout the song, so peaceful.. I love when Jordan echos it on the keys before the first verse too.
Outcry
0:59 - 1:42
The main riff that is repeated throughout the song a bunch of times. It's those "octave power chord" (I'm unsure they have a name, they're just two of the same notes played an octave lower/higher in a power chord shape) slides he does that are so awesome in this riff.
So what are your favorites?