I play a priest and a boomkin.

I was in my power word barrier, and a clever moonkin silenced me in the middle of it.

clever clever moonkin.

I'd have /salute but I was insta-killed.

Do you feel the sunshine?
Does it brighten up your day?

So...you feel the sunshine, and it brightens up your day?

I enjoy using Solar Beam on the squirrels in Darnassus.

It would freak out the squirrel without harming it, causing the squirrel to run away while the spell was active. I'd be stuck in "combat mode" during this time. Eventually, the spell would burn out, and the squirrel would come running back to its previous location.

I'm not sure if Darnassus still has squirrels since 4.03a. Lots of butterflies and rabbits now. I'll have to try it out on them....

On a more serious note, I think one of the best parts of Solar Beam in PvP right now is that people simply aren't used to it. Although we've been taught to avoid standing in circles, a bright shaft a light doesn't look particularly harmful. In addition to the silence effect that persists while the target remains under the AoE, I find that Solar Beam generally buys me a few seconds where the enemy is too stunned to realize that they need to move.