By far the worst streetcar line in Toronto.
I read somewhere that the only two cities in North America that have streetcars are San Francisco and Toronto. Unfortunately this line, along with the 501 Queen, is a line that either needs a massive overhaul or to be completely abolished.
First of all, the wait times are terrifyingly inconsistent. Sometimes you'll wait no minutes, sometimes you'll wait upwards of 45 minutes. I'm convinced that the recent TTC ads proclaiming "We're staying up later for you! Extended bus and streetcar service till 1am" really means they've reduced the number of streetcars and spread them out, because the wait times are worse than ever.
At times you'll be waiting for so long, only to suddenly see four or five streetcars in a row coming your way. Of course it's one of those times that you need to get to Queen's Quay and the streetcars are all short turning at King or something. Bah.
Second of all, the streetcar REEKS. It passes through Chinatown and everyone gets on with their various bags of weird organ meats and fresh (or from what it smells like, rotting) fish. With 14,000 passengers per day (the busiest streetcar line in the city), it gets really gross.