You always meet some interesting people on this streetcar, especially at night. I remember a New Years a few years ago where it took us a couple hours to get home. I met a Spanish person who was travelling around North America, New Yorkers heading to an after-party, and tons of locals who were loaded. Just great.
These fab, frequent cars get a dedicated lane along one of my favourite streets. Even during non-rush hours, you'll be sure to catch a Spadina streetcar shortly after you plant yourself at one of the partially sheltered, fence-protected stops. (Hurray for less chance of getting run down by a passing car!) Spadina is a major artery of some of the best neighbourhoods in Toronto (including my own); and next to walking, the streetcar is the best way to enjoy the street's many pleasures.
I like ground transit as it is, but the 504 has it all--the bright lights of King, Ronceasvalles, that interesting tunnel near Dufferin.