Go Jarrod, nice van hallen man.... Here's some extensions to your average blues box (if you haven't tripped over them before):
E|---------------------------5-7-8-|
B|---------------------5-7-8-------|
G|----------------4-5-7------------|
D|-----------4-5-7-----------------|
A|------3-5-7----------------------|
E|-3-5-7---------------------------|
It's a movable major scale (G above) but minor pentatonic if you play it over A etc (so bottom E 5th fret = key), it will help you move from the basic blues box (BTW all notes in between are valid particularly as passing notes)
Check out this clip (http://www.youtube.com/watch?v=sIr9nZ4aJfo), I play the 3rd guitar solo (MP1/Alesis quadverb/ IPS33 smart Shift/B200s stereo quad box) and also most of the guitar backing (3/4 G minor blues), I've never heard the original of this song so all the backing guitar I wrote. To use above scale, transpose the pattern 5th fret to 3rd etc (i.e. G minor pentatonic (F major moveable but over Gm))