It has a really strong cinnamon smell and taste and I really love cinnamon so this is my current favorite. I like peppermint tea or anything nice and herbal at night but during the day I prefer black teas. I looooove earl grey and english breakfast and used to really be into green teas - especially jasmine - but I've kind of gotten over that.
That being said coffee is my go-to energy source. I work at Peet's Coffee though and I can't stand the taste of it so I generally just down a couple shots of expresso at the start of my shift and then switch to tea. As far as drip coffee goes, the darker the roast the better. Probably the best coffee I've had comes from a little local organic coffee shop just down the street from my house.
I also like chai but I've yet to find a brand that is consistently satisfying. =\
And a word of caution to all you Californians, don't ever order chai from Peet's Coffee. Seriously, I don't know what we do but it's bad.