I love the word 'shiny.' I blame Joss Whedon for this. If you've watched Firefly, you know what I'm talking about. But it's an awesome word. It's got the standard connotations and definitions - an object that gleams or has a lustrous finish. But it can also mean, well, awesome. It can be used an exclamation on its own, or as part of an adjective.
Also, I like 'blargh,' an expression of frustration. Don't confuse it with 'blergh,' an expression of disgust.