A picture is worth a thousand words. These are some of the many faces of Wikipedia:
0–9
A
ACupOfCoffee on the right
Adrian (Adrian Lamo)
User:AlexR (on IRC aka as AlexTM)
Andrewa (Andrew Alder)
Arpingstone (Adrian Pingstone)
B
Banes (Daniel H.)
Bcorr (Brian Corr)
Bdell555 (Brian Dell)
Brassratgirl (Phoebe Ayers)
Brianreading (Brian Reading)
Bronger (Torsten Bronger)
Burgundavia (Corey Burger)
C
Catbar (Brian Rock)
ClockworkSoul (in extreme closeup)
CookieMonster755 (F.R Detente)
Cum Deo (RL: Sascha)
D
Darthgriz98 complete with chainsaw action.
Mihai_Dragomirescu (Bob - Mihai Dragomirescu)
Dfrg.msc (Nick)
E
EVula
(well, in a way... that is my hand, at least)
F
G
GChriss (George Chriss)
Gmaxwell (Greg Maxwell)
Goto with son
The Great Gavini in one of his good moods
Grunt (Steven M.)
GTBacchus (G. Tony Jacobs)
guillom (Guillaume Paumier)
Geraldshields11 researching at the Library of Congress.
H
I
J
J.delanoy (right)
JackpotDen (Deniz N)
Jakro64 (Jan S. Krogh)
Jehochman (Jonathan Hochman)
K
L
M
Matty J (Matthew Johnston)
Mavarin (Karen Blocher)
Mihai Dragomirescu (Bob - Mihai Dragomirescu)
Mindspillage (Kat Walsh)
Mirv (C. Podles)
N
O
One Salient Oversight (r) and some guy.
P
Q
QFL247 (Matt Affolter), in caricature and real life
R
RockOfVictory (J. J.)
S
Springeragh from back in the 20th century
SqueakBox with his wife.
SWAdair (Stephen W. Adair)
Switisweti (Adam Vogelaar)
T
Tatiana kitty (Tatiana Anne)
The Thing That Should Not Be (A.K.A. Vandalism destroyer)
Tomruen (Tom Ruen)
Me an my franZ! (TShilo12/Tomer)
Ta bu shi da yu (now Tbsdy lives)
U
UtherSRG (Stacey Greenstein)
V
W
Cartoonist Greg Williams (by son Jeremy, 11)
X
XJamRastafire (Jani Melik)