Global Delight has released Voila 3.7, adding support for recording HD screen captures at 60 frames per second. The update also offers the option to downscale screen captures from Retina displays; adds native tagging in OS X 10.9 Mavericks; adds support for sharing videos via Facebook, Twitter, Flickr, Vimeo, Messages and AirDrop; adds a timer for setting the duration of a recording; and provides an option to append the date and time to the filenames of your captures. ($29.99 new from Global Delight with a 25 percent discount for TidBITS members or from the Mac App Store, free update, 26.4 MB, release notes)
Fun Way to Send Attachments in Mail
If you're working in a file that you want to attach to a message in Apple Mail, you can transfer the file to Mail easily: From the title bar of the file's window, drag the little proxy icon to Mail's icon on the Dock. Your Mac will make Mail the active application and open a new outgoing message, with the file attached.
(If your icon won't drag, the file probably isn't saved.)