This is what I came up with after hearing this song on the end of the 
Knocked up DVD. (Best part of the whole film... lol)
It is in the right key cos I played along to it once I had it figured out. 
Play it mostly up on the 6th and 8th frets, that way you can go
down to F at the first fret where he sings about the house smelling 
like a wet dog. Have fun

Grey in L.A

          A#        F          D#            A#
When it's grey in L.A. I sure like it that way
              D#           A#              F
Cause there's way too much sunshine round here
           A#        F       D#            A# 
I don't know about you I get so sick of blue skies
    D#        F         A#   
Wherever they always appear

          A#        F          D#            A#
And I sure love the sound of the rain pouring down
      D#          A#           F
On my carport roof made out of tin
          A#        F          D#            A#
If there's a flood then there's gonna be mudslides
    D#         F           A#   
We all have to pay for our sin

D#         A#               D#         A# 
And I suppose that they'll close canyon roads
      D#         A#               F
And the freeways will all start to clog 
     D#         A#               D#         A#     
And the waters will rise and you won't be surprised
          D#               A#                F      
When your whole house smells like your wet dog

          A#        F          D#            A#
When it's grey in L.A. it's much better that way
         D#         A#              F
It reminds you that this town's so cruel
          A#             F             D#            A#
Yeah it might feel like fun when you're sportin' sunglasses
     D#           F             A#   
But really you're just one more fool

     A#        F          D#            A#
I'm just a chump this whole town's a dump
       D#            A#              F
We came out here to dump all our dreams
          A#        F          D#            A#
Of making it big but we're stuck in a sig alert nightmare
    D#     F                   A#   
That's just how it seems                                                              

D#         A#               D#         A# 
And I suppose Laurie David sure knows                                
      D#         A#               F
All those cars we drive heat up our earth
D#         A#               D#         A# 
And sea temperatures rise and those constant blue skies
         D#          A#            F     
And brush fires can sure curb your mirth

          A#        F          D#            A#
Brad Grey's in L.A. yeah OK I should stay here
        D#         A#               F
There's no place that's better i know
   A#        F          D#            A#
For a wannabe star stuck in a car
  D#     F                   A#  
On a freeway with nowhere to go 

Repeat 1st verse