Meet Inbetween Us. Google maps mashup to find the “middle” of where people are. I actually just used this to figure out where a group of 6 people should meet.

Ride the City: safe bike routes made easy. google mashup that gives directions that are optimized for biking. i would totally use a toronto version of this.

Google Street View Tokyo: Shibuya. it was a quite day. those are some crazy maps though. they have street views of what looks like alleys.

Rentometer by Rentomatic - Get House and Apartment Rental Comps by Entering an Address. not a bad app.