All time rivals, still no definitive answer. Let’s see what everyone can come up with!

I’ll start it…

PEPSI VS. COKE

Coke, DUHHHH

Ninjas VS. Jedi

PEPSI without hesitation! :P… yet without the “Jos Louis”!…

Ninjas, the real thing!

Blues Vs Jazz

If i got your point:
Yahoo Vs Google.

Facebook Vs. MySpace

:-)

youtube vs revver?

Mac vs PC :D

Nokia Vs Motorola

LG Vs IPhone

Nike vs. Adidas

Apples vs Pears

MacDonald’s vs. KFC

over here it is McDonald’s Vs. Burger King :D

In the Philippines it would be McDonald’s Vs. Jollibee! Then again, McD’s never really caught up to the bee!

And I always go for Pepsi….

The Beatles vs. Elvis

(don’t kill me DJ! I still haven’t changed my smoke alarm….)

(@Kat: Elvis will help you get your 9-volt mojo workin’.)

John vs. Paul

In the Egyptian football:
Ahly Vs Zamalek

Movies:
Bollywood vs Hollywood

In Australia:

Aussie Rules vs Rugby League (vs Rugby Union vs soccer)
Woolworths vs Coles
Holden vs Ford
McDonalds vs Hungry Jacks
KFC vs Red Rooster
Pizza Hut vs Dominos

In South Korea:

Anycall (Samsung) vs Cyon (LG)

In general:

MSN vs AIM
MySpace vs LiveJournal (vs Facebook vs Wordpress vs Blogger….)
Summer vs Winter (a constant topic of discussion here right now – it’s damn hot)
Mainstream music vs Alternative/Indy

Sprite vs. 7up
Walkers vs. McCoys
Harry Potter vs. Lord of The Rings
BBC vs. ITV
Rock Band vs. Guitar Hero
Me vs. Pie on windowsill

Bugs Bunny vs Mickey Mouse
Pokemon vs Digimon

Linux vs. Windows
Sugar vs. Salt
Digital vs. Analog

semi-sweet vs. milk chocolate

In Egypt also:
Vodafone Vs Mobinil

Re. semi-sweet vs. milk chocolate:

Lindt vs. Scharffen Berger vs. Ghirardelli vs. Guittard

Lindt vs. Scharffen Berger is too difficult; although I would pick Guittard over Ghirardelli any day. :)