How Do You Want to be Thanked?

After a job interview I always send a hand written thank you card.
That is what I was taught. I know that people my age and above generally like getting a hand written note because it shows sincerity, personal effort to do a little extra rather than send an email, and not a lot of people send cards anymore.

In this day and age of instant media, is sending a hand written thank you card the only proper way to thank someone for a job interview?
What about texting?
Sending an email?
Is it okay to call by phone?
Is how you thank someone totally dependent on their generation?

What do you think?
Vote in my latest poll and I'll share the answers at a later time with you and the future job seekers I teach in my classes.
http://polls.linkedin.com/p/110792/rihbo

Thank you!
Ev