Tom's is at a brilliant location: Queen and Ossington - so it gets its fair share of CAMH (Centre for Addiction and Mental Health) clients, so it's not without some fun.
The menu is cheap (but jumped recently: the $2.75 hamburger went up to $2.95), and the service is fast. There are a few women who work there - the younger ones are spot-on, but Tom's wife is only pleasant if it's not too busy.
Grab a table, order breakfast - the bacon is lovely; the portions are big.