A "Today" Cover of the smashing pumpkins by Ben Kweller on one acoustic guitar
I saw this on youtube and I liked the version so I tabbed out

Not real sure what he's jamming on at the end there.  Possibly replace the B chord in 
last verse with a D barre  and that sounds pretty good too

Key of D

Opening Riff:

e|--10------12------10------11p10---|
B|------10------10------10-------10-|
G|----------------------------------|
D|----------------------------------|
A|----------------------------------|
E|----------------------------------|

   D                 A              G
e|--10--10--10--xx-|-s5--5--5--xx-|--3--3--3--3-3-|--3--3--3--3-3-|
B|--10--10--10--xx-|-s5--5--5--xx-|--0--0--0--0-0-|--0--0--0--0-0-|
G|--11--11--11--xx-|-s6--6--6--xx-|--0--0--0--0-0-|--0--0--0--0-0-|
D|--12--12--12--xx-|--------------|--0--0--0--0-0-|--0--0--0--0-0-|
A|-----------------|--------------|--2--2--2--2-2-|--2--2--2--2-2-|
E|-----------------|--------------|--3--3--3--3-3-|--3--3--3--3-3-|


D     A      G
Today is the greatest
G
Day I ?ve ever kown
D     A        G
Can?t live for tomorrow
G
Tomorrow?s much too long
D A        G
I burn my eyes out
D     A  B
Before I get out

E  G     B
I wanted more
E    G          B
Than life could ever grant
E     G      B
Bored by the chore
E  G      F#   C#
Of saving face


D(barre) A(barre)  G
Today   is   the   greatest
G
Day I have ever known
D     A        G
Can?t wait for tomorrow
G
I might not have that long
D    A       G
I'll tear my heart out
D      A B
Before I get out

E    G      D
Pink ribbon scars
A
That never forget
E    G     D
I?ve tried so hard
A
To cleanse these regrets
E   G    D
My angel wings
A
Were bruised and restrained
E  G     F#  C#
My belly stings

D     A
Today is
D     G
Today is
D     A
Today is
D     A      D     A
The greatest day
D     A      D     A   B
That I have ever       known

E         G        B
I want to turn you on
E         G        B
I want to turn you round
E         G        B
I want to turn you on
E         G
I want to turn you

D     A       B    G
Today is the greatest
D     A       B     G
Today is the greatest day
D     A       B     G
Today is the greatest day
D    A       B      G
That I have ever known

D(barre) 
A(barre)