i like their donuts but i've had much better. i think they used to be better when they didn't use frozen dough, but there are a lot of places that have better doughnuts than timmy's, they just aren't quite as accessible (as in there are 2 or 3 timmy's on campus, but nothing else). as for the coffee, i'm not a huge fan of it. i drink mine black and there just isn't enough flavour in Tim Horton's coffee for me. i also don't drink it often, don't want to get addicted to caffeine like all my friends and family, but when i do i like to get a good strong cup of coffee.
i do go to timmy's for breakfasts occasionally though, usually get a bagel, but the other day the lineup was so long i actually resorted to going to Rooster's (the student run coffee place, it's full of artsies so you don't see too many engineering students in there), it was expensive.
sorry for the random tangent, it's late (well, it's 9pm, but i've got to wake up at 4:15 so it's late for me), i tend to do that when i'm tired.