I fell in love with the Philips Wake-up Alarm Clock Light ($170) when I got to experience its miraculousness at a hotel in Portugal.
If your bedroom doesn't get much light in the morning or you are one of those lucky ones who has to wake up at the crack of dawn for work, the Wake-up Light makes the waking up process a whole lot easier with its nature sounds and gradual faux sunrise. The way it works is, 30 minutes before the actual alarm is set to go off, the clock will start getting brighter, therefore making it easier to wake up when you need to get out of bed. You can change the brightness settings and times, and even set it to dim down in the evening for a gradual bedtime experience as well.
Philips also offers the Wake-up Light with a dock for your iPhone or iPod for $200.