here's the theme tune from space ghost coast to coast, in a standard guitar tuning.
no?) i love that riff. :D

notice how it comes in on the offbeat. yep.

e  :--------8---8---|8---8---8---8---|8-/12-----10-------|
B  :--------8---8---|8---8---8---8---|8-/12-----10-------|
G  :--------5---5---|5---5---5---5---|5-/-9------7-------|
D  :----------------|----------------|-------------------|
A  :----------------|----------------|-------------------|
E  :----------------|----------------|-------------------|

e  :--------8---8---|8---8---8---8---|8-/13-----10-------|
B  :--------8---8---|8---8---8---8---|8-/13-----10-------|
G  :--------5---5---|5---5---5---5---|5-/10------7-------|
D  :----------------|----------------|-------------------|
A  :----------------|----------------|-------------------|
E  :----------------|----------------|-------------------|

e  :--------10---10---|13-/16---16-17---17---|17---16---16---16---|
B  :--------10---10---|11-/14---14-15---15---|15---14---14---14---|
G  :---------7----7---|10-/13---13-14---14---|14---13---13---13---|
D  :------------------|----------------------|--------------------|
A  :------------------|----------------------|--------------------|
E  :------------------|----------------------|--------------------|

e  :16---15---15---15---|15---14---14---14---|13-------12-------|
B  :14---13---13---13---|13---12---12---12---|11-------10-------|
G  :13---12---12---12---|12---11---11---11---|10--------9-------|
D  :--------------------|--------------------|------------------|
A  :--------------------|--------------------|------------------|
E  :--------------------|--------------------|------------------|

e  :11-------7-7-7-7-7-7-7-7|6-6-6-6-6-6-6-6-5-5-5-5-5-5-5-5|
B  :-9-------5-5-5-5-5-5-5-5|4-4-4-4-4-4-4-4-3-3-3-3-3-3-3-3|
G  :-8-------4-4-4-4-4-4-4-4|3-3-3-3-3-3-3-3-2-2-2-2-2-2-2-2|
D  :------------------------|-------------------------------|
A  :------------------------|-------------------------------|
E  :------------------------|-------------------------------|

e  :4-4-4-4-4-4-4-4-4-4-4-----|--------8---8---|8---8---8---8---|
B  :2-2-2-2-2-2-2-2-2-2-2-----|--------8---8---|8---8---8---8---|
G  :1-1-1-1-1-1-1-1-1-1-1-----|--------5---5---|5---5---5---5---|
D  :--------------------------|----------------|----------------|
A  :--------------------------|----------------|----------------|
E  :--------------------------|----------------|----------------|

e  :8-/12-----10-------|--------10---10---|13-----10-----12---|
B  :8-/12-----10-------|--------10---10---|13-----10-----12---|
G  :5-/-9------7-------|---------7----7---|10------7------9---|
D  :-------------------|------------------|-------------------|
A  :-------------------|------------------|-------------------|
E  :-------------------|------------------|-------------------|

the bit with the really fast strumming might not actually be really fast strumming, it
be done by a pedal. but i don't really know, it goes sorta quietish at that bit. :D to
to that you might want to roll off some of the volume on your guitar or volume pedal 
playing. or not, you have freedom of choice really.

have fun. RIP, Sonny.