It depends. On some days coffee reeaaally kicks in.
I remember being at uni at 2pm, drinking 2 cups of coffee and eating only a few bites of a sandwich.. I was totally on track. I was nervous and shaky, but I felt SO productive and I was really in a good mood.
Sometimes I drink a full thermos bottle of coffee and feel no difference.
Weird me.
I love the smell and taste of coffee. But it has to be good coffee. Instant coffee only works in imergency situations.
I love black tea as well though. But it does not kick in so much.
I tried an iced coffee drink last year, it only tasted like water for me (I blame it on the kitchen, not the coffee, cause coffee never disappoints me

), but since then I am afraid to try iced coffee.
Term papers are going well, thanks Nyuu! About 4 pages to go, will finish them off today!