These are some useful scales for just messing around with 
backround instruments. Please Rate.

C Scale
e-----------------------------------------------------
B-----------------------------------------------------
G-----------2-4-5-------------------------------------
D-----2-3-5-------------------------------------------
A-3-5-------------------------------------------------
E-----------------------------------------------------

G Scale
e-----------------------------------------------------
B-----------------------------------------------------
G-----------------------------------------------------
D-----------2-4-5-------------------------------------
A-----2-3-5-------------------------------------------
E-3-5-------------------------------------------------

D Scale
e-----------------------------------------------------
B-----------------------------------------------------
G-----------4-6-7-------------------------------------
D-----4-5-7-------------------------------------------
A-5-7-------------------------------------------------
E-----------------------------------------------------

A Major Scale
e-----------------------------------------------------
B-----------------------------------------------------
G-----------------------------------------------------
D-----------4-6-7-------------------------------------
A-----4-5-7-------------------------------------------
E-5-7-------------------------------------------------

E Major Scale
e-----------------------------------------------------
B-----------------------------------------------------
G-----------6-8-9-------------------------------------
D-----6-7-9-------------------------------------------
A-7-9-------------------------------------------------
E-----------------------------------------------------

B Major Scale
e-----------------------------------------------------
B-----------------------------------------------------
G-----------------------------------------------------
D-----------6-8-9-------------------------------------
A-----6-7-9-------------------------------------------
E-7-9-------------------------------------------------

F# Scale
e-----------------------------------------------------
B-----------------------------------------------------
G-------------8-10-11---------------------------------
D------8-9-11-----------------------------------------
A-9-11------------------------------------------------
E-----------------------------------------------------

C# Scale
e-----------------------------------------------------
B-----------------------------------------------------
G-----------------------------------------------------
D-------------8-10-11---------------------------------
A------8-9-11-----------------------------------------
E-9-11------------------------------------------------