Here's one of my favorites. It's got plenty of non-bashed Cas, and bonus Rufus:

http://mollyamory.livejournal.com/16024.html

Here's a recent one I really liked, a future!fic that's primarily damaged Sam, but has Dean and Cas also showing the scars of what they've been through:

http://killabeez.livejournal.com/425515.html

If you're in the mood for gencest, these two are my favorites:

http://obstinatrix.livejournal.com/76264.html

http://debbiel66.livejournal.com/18265.html (I've also really been enjoying her resurrected John verse, but that's not at all cracky)

And the l_d one where Sam knits:

http://lazy-daze.livejournal.com/690924.html

I really love rainylemons, but that's more horror and h/c than light and fun. She has a bit of S/C and S/D, but most of her stuff is gen.

Also art, because this one makes me happy:

http://spn-summer-art.livejournal.com/11466.html?view=187082