Community S1E21 "Contemporary American Poultry"
In this episode, a character who goes by the nickname Star-Burns (because his sideburns are cut in the shape of stars) gets caught in a scandal that is covered by the school paper. The paper is only onscreen for a couple seconds, but it contains a blatant Stargate reference.
This is the best transcription that I can come up with:
The GCC Gazette Journal Mirror
A Quality Publication of Greendale Community College
- Volume 29, Issue 28
- Spring Semester
- April 22, 2010
STAR-GATE!
HEADLINE IN REFERENCE TO WATERGATE, NOT THE 1994 SCI-FI FILM
No wonder they're always running out of chicken fingers. It makes me so mad!
- Troy Barnes, Student
by Annie Edison
staff writer
[a bunch of Lorem Ipsum in Latin]

Undercover surveillance photo taken by GGJM investigative reporting staff
Bonus reference from Community S2E10 "Mixology Certification":

STRANGER: Okay, so, what is wrong with you, that you can sit here this whole time and never pick up on the fact that a man is hitting on you?
ABED: Oh, I actually did pick up on it after a while.
STRANGER: You actu-- [PAUSE] And?
ABED: I really really like talking about Farscape.
STRANGER: [THROWS DRINK IN ABED'S FACE]
ABED: [PAUSE] It's a really good show.
STRANGER: [WALKING AWAY] Stargate's better.
Well, then maybe he should spend five hours every morning carving that into his face