Haha, ok nw, bassist here.

(Bass)

Beginner:
Mungkin Nanti (PeterPan)
Numb vs Encore (LP JZ)
He Wasn't (Avril)
The Reason (Hoobastank)
Falls on me (Fuel)
My Sacrifice (Creed)

Party or jamming:
Warning (Greenday) (quite beginner lvl, but nice for jamming, hHa)
7 Nation Army (The White Stripes)
Smoke Over the water (Deep Purple)
Are you gonna be my girl (Jet)(darn nice song fr bass... bassist! a chance fr yall to stand in the middle of the stage! hahaha)
God is a girl (Groove Coverage) (no tabs or chords online, so use ur creativity fr the basslines on this 1! verynice song to play on bass with treble full, bass cut half, mid half oso)

MUST KNOW!:
A place for ma head (Linkin Park)
In the shadows (Rasmus) (a lil song fr bassists to shine... a lil, haha)

Note for bassists: Playing rootnotes for all the songs above would just make them all become beginner songs, so plz, use ur creativity to add some extra lines to the chords.