For a nice simple riff that's fun to play and sounds pretty cool theres this:
6/8
D   |---------------------------------------|
A   |---------------------------------------|
F   |---------------9h10h12p10p9----------|
C   |---7---9---10----------------12-10-9-|
G   |-0---0---0----------------------------|
C   |---------------------------------------|
 
D    |-----------------------------|
A    |-----------------------------|
F    |-----------------------------|
C    |---7---8---10---7---8---10--|
G    |-8---8---8----7---7---7-----|
C    |-----------------------------|
Song can be found at:
http://www.soundclick.com/bands/page_songInfo.cfm?bandID=601208&songID=6729528
About 1:40 in.
There may be a few mistakes with the tab as I don't have access to my guitar here at my Nan and Grandad's house but you'll hear if there's a mistake.
Not that this'll be any use to any of you anyway, it's simple as fuck haha, this was the first thing I wrote with the intention of something being obviously legato-y.
Fun to play though.