My favorite webcomics:
(most favored ones first)

XKCD
Dominic Deegan: Oracle For Hire
Dresden Codak
Comedity
Looking For Group
Questionable Content
ErfWorld
Sluggy Freelance
Rob and Elliot
Slightly Damned
Order Of The Stick
Sam and Fuzzy
Saturday Morning Breakfast Cereal
Goblins
Girl Genius
Finder's Keepers
Tweep
Dr. McNinja
Piled Higher and Deeper
Dead Winter
Freak Angels
AppleGeeks Lite
Zebra Girl
Sequential Art
Applegeeks
Mac Hall
Girls With Slingshots
Player Versus Player
Three Panel Soul
Ctrl+Alt+Del
Rock Paper Cynic
Zortic
Penny Arcade
VG Cats
8-Bit Theatre
Real Life
Errant Story
MegaTokyo
Geist Panik
Paradox Lost
Staccato
Zap
Animals have problems too
Sore Thumbs
white ninja

Divided by minimum weekly frequency:

=7
>=5
>=3
>=2
>=1
...ummm
DD
SF
SMBC
PvP
QC
RL
RPC
XKCD
LFG
S&F
GG
Twp
DrMcN
PhD
DW
AGL
GWS
CAD
Zort
PA
8-Bit
ES
ST
EW
SD
OotS
FK
FA
MT
GP
Zap
wn
DC
R&E
Gob
ZG
SA
AG
3PS
PL
Comedity
MH
VGC
Stac
AHPT

Here they are divided by day:

Mon
Tue
Wed
Thu
Fri
Sat
Sun
XKCD
DD
DC
LFG
QC
EW
SF
SD
OotS
S&F
SMBC
Gob
GG
FK
Twp
DrMcN
PhD
DW
FA
AGL
ZG
SA
AG
GWS
PvP
CAD
RPC
PA
VGC
RL
ES
MT
GP
PL
Stac
Zap
ST
wn
QC
SF
R&E
SMBC
GWS
PvP
RPC
8-Bit
RL
XKCD
DD
LFG
QC
EW
SF
S&F
SMBC
GG
Twp
DrMcN
PhD
DW
AGL
SA
GWS
PvP
3PS
CAD
RPC
PA
RL
ES
MT
ST
wn
QC
SF
OotS
SMBC
GWS
PvP
RPC
8-Bit
RL
XKCD
DD
LFG
QC
EW
SF
S&F
SMBC
Gob
GG
Twp
DrMcN
PhD
DW
AGL
SA
GWS
PvP
CAD
RPC
PA
RL
ES
MT
ST
wn
SF
SMBC
Zort
8-Bit
SF
SMBC
GWS
wn