WELL I'm the biggest Glee fan because:

Giant posterS in my room. I have a lot (: I never stop looking at them
Lea Michele - I sent her a letter, she sent back an autograph (:
Extreme obsession - for the past 3 months, I haven't dreamed of anything besides Glee !
Emma - I love her character so much, I went to Build-a-bear and made a bear named Emma.

^
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spells Glee !

And more reasons:

I printed off a picture of every character [plus my big posters] i have over 19 Glee pictures in my room
I own both the CD'sRead more