My favorite webcomics:
(most favored ones first)

XKCD
Dominic Deegan: Oracle For Hire
Rob and Elliot
Sluggy Freelance
Saturday Morning Breakfast Cereal
Dr. McNinja
Questionable Content
Order Of The Stick
Comedity
Sam and Fuzzy
Zebra Girl
Goblins
Piled Higher and Deeper
MegaTokyo
Hellbound
Girl Genius 101
Girl Genius
Sore Thumbs
Player Versus Player
Ctrl+Alt+Del
Real Life
Penny Arcade
Errant Story
VG Cats
white ninja
8-Bit Theatre
Animals have problems too
Applegeeks
Mac Hall
Staccato
Zortic
Zap

Here they are divided by day:

Mon
Tue
Wed
Thu
Fri
Sat
Sun
XKCD
DD
R&E
Sluggy
SMBC
Dr. McN
QC
PVP
CAD
RL
ES
Goblins
OOTS
Comedity
S&F
ZG
PHD
MT
H-bound
GG
Ahpt
DD
Sluggy
QC
PVP
RL
SMBC
XKCD
DD
R&E
Sluggy
SMBC
Dr. McN
QC
PVP
CAD
RL
ES
Goblins
OOTS
S&F
PHD
MT
GG
DD
Sluggy
QC
PVP
RL
SMBC
XKCD
DD
R&E
Sluggy
SMBC
Dr. McN
QC
PVP
CAD
RL
ES
Goblins
OOTS
S&F
PHD
MT
GG
DD
Sluggy
PVP
SMBC
DD
Sluggy
PVP
SMBC

Divided by minimum weekly frequency:

=7
>=5
>=3
>=2
<1
DD
Sluggy
PVP
SMBC
DD
Sluggy
QC
PVP
RL
SMBC
XKCD
DD
Sluggy
QC
PVP
CAD
ES
RL
OOTS
S&F
GG
Dr. McN
PHD
SMBC
MT
DD
Sluggy
QC
PVP
RL
Goblins
R&E
Comedity
SMBC
ZG
H-bound
Ahpt