Jolly good! Listen to this great actress playing up different English speakers with different accents. If you like phonetics, dialects, and English, you’ll love it. Why don’t you show it to your students and help them see how different can English sound?
For those who think that phonetics is a way to learn how to pronounce properly, here’s Phonetics, a very good site which shows you how to articulate in order to pronounce in proper American English (Also German and Spanish) There’s sound, graphs and video… everything is very well described.