I'm very (!) fond of the free screenshot utility Skitch - it helps me to capture nearly everything, convenently annotate it with text and light graphic elements. See example below:
Creating crosshair shots by hitting the hotkey is quick and easy. Uploading to Flickr or Evernote works great.
Now - what am I whining about: The just-released Version 2 of Skitch breaks nearly everything: It does not sit in the menubar any longer, hotkey doesn't work, upload is havoc.
Please- fellow Skitch users: help me to convince the skitch guys to give us the fancy features back…