I used to love herbal tea. When I was pregnant with Teddy I went right off it, and couldn't really face it until I became pregnant with Jasper, when I suddenly couldn't get enough of the stuff. I suppose if we ever have a third child it will be lost to me forever, because I'm definitely not having a fourth just so I can get back to drinking herbal tea!
If you're not a fan but want to be, it's worth splashing out on some of the 'better' brands, like Pukka and Teapigs - their herbal teas are as different from the insipid watery things in the supermarkets as proper tea from a pot is from the lukewarm stuff you always get seem to get served in hotels.
My absolute hero at the moment is matcha powder from Teapigs. I started taking it because someone mentioned that it helped boost your metabolism (hey, I'll take all the weight loss help I can get), but I genuinely think that it has provided all the energy boosting, skin improving, life enhancing benefits that it claims to have. And even if it doesn't, 83p a day for a placebo that makes me feel this good seems like a small price to pay!
Incidentally, if anyone else is stuck in weight loss hell (I lose all will to eat sensible when pregnant, so have to pay the price at some stage and do the whole diet thing), I highly recommend the My Fitness Pal app for the iPhone and I think Android too. It's got a great calorie counting database, a lovely forum of supportive people and you can add friends who will congratulate you for keeping to your calorie and exercise goals (and it scares you into not eating too much in case they find out) and who you can motivate in turn.