Amazon Prime - is it worth it?

[revots33]

I tend to order a lot of stuff (Christmas presents etc.) from Amazon but usually just wait the 2 weeks or so for free shipping. I'm debating whether it's worth upgrading to their Amazon Prime service.

I'm wondering if it is worth $79 bucks a year to get free 2-day shipping (or $3.99 for overnight) if I need something in a hurry for a gift etc.? Plus I'll sometimes just want one DVD or book that's less than $25, and I find myself buying more just to get free shipping.

Anyone use this and do you think it's worth the 79 bucks/yr?