I'll start you off with my favorite, Flash. Here you will find some simple animations and a full Flash website for your review. Please enjoy the presentation.

Main Flash Site
Dragonfire Karaoke
'Interactive Animation' class. The vector art is me, by me.
Comprehensive, functional Flash site for Karaoke Service
Electric Eye-Judas Priest
Word Animation
Judas Preist's 'Electric Eye' is partially animated here.
This example is just a few Flash simple animations.