It's also really important to wake up at the same time every day (including weekends) to help reset your circadian rhythms. Do this for two weeks and all but the most stubborn sleep problems should resolve themselves.
Scott
I've heard this as well, but I love the simple luxury of sleeping in until 8:30 or 9 (or later, sometimes) on the weekends. I just can't see myself waking up at 6:15 on saturday or sunday.
I also have a difficult time falling asleep (another reason I catch up by sleeping in on weekends), and find that I do have less trouble when I'm exercising frequently. I also try to transition from my evening activities by taking a bath or listening to music and reading for 30 minutes to an hour.
I don't seem to have much trouble getting out of bed, because I look forward to the ride in, but it does suck when I've been tossing and turning till 2 am and I'm operating on 4 hours sleep. I need 7-8.
I've found good results with herbal teas that have lavender, chamomile, etc. Yogi, celestial seasonings and other brands have some great "sleepy" blends.