The past year I've been involved I've seen the following:
- Price has tripled. -> $4-$12
- Major hacks have caused large btc businesses to shut down -> making MyBitcoin hack seem small time -> bringing bad press to Bitcoin (which in turn is always good press)
- Major scams by trusted "Donors" and others have rocked the community -> taking loads of coins with them
- Romney & Bitcoin have been used in the same articles across the world during his US Election run
- dreams of new hardware (ASICs supplanting GPUs) for miners has been more like nightmares as delivery times lapse
- As of later today... BTC block reward goes from 50 coins to 25 coins.
I'm sure there are others, but these first came to mind.