Xazy

Avoiding all of the diff sex ideas...

Arcade
Batting cages
Beach
Bike ride
Boating
Bowling
Camping
check out your local newspapers or places like Time Out Toronto or other places for free things to do...
Circus
Clothing store (try on clothes different than you would ever wear).
Concert
Fair (street fairs / renassance fair for example are diff ones)
Firing range
Fishing
Going out to eat
Golf (miniature or regular)
Hiking
Ice skating
Mall (avoid shopping but that is an idea)
Museum
Outdoor cafe
Park
Picnic
Pottery & art (lots of places where you can make your own stuff)
Read to wife
Road trip
Roller Blade / skating
Saturday market/farmers market
Shoot pool
Spa trip (always a nice relaxing thing)
Sports Event (baseball/football etc.. Bluejays game)
Test drive a car
Theater, (Broadway / Off-Broadway)
Walks (if there is water nearby)
Zoo
If you are in NYC a cheap date, Staten Island ferry

And this is just a quick list that I made up...

<< edit >> Just consolidated the list and added some more ideas from
"anti fishstick"
"Spongy"
"maleficent"