I love heading to the planetarium since it's the only place I can really see the stars through all the lights of the city. But making the trek out there (and paying the entrance fee) makes this a special occasion destination. However, I can still get the same cool effects at home with Stellarium.
A free download, Stellarium lets you browse the universe, see the stars from your current coordinates, and even sit back and check out the sights from the Mars Rover. In a way, it's better than the planetarium, since you can look for specific stars and planets, and match up the constellations to the signs of the zodiac.
Want to see what the stars look like right now from Hamberg? Go ahead, it's only a click away.