Comic Neue is a modern, acceptable update to Comic Sans font. It aspires to be the casual script choice for everyone including the typographically savvy. The squashed, wonky, and weird glyphs of Comic Sans have been beaten into shape while maintaining the honesty that made Comic Sans so popular. It's perfect as a display face, for marking up comments, and writing passive aggressive office memos.
Comic sans is not pretty. If you look at it impartially, it just looks deformed. This font is actually very attractive. So it's a really valuable addition to the Mac (assume it also works on Windows, but I don't know). I like this.
The current version is 2.3. The Developer's website states:
"Comic Neue v2.2: Added support for over 40 languages and improved metrics.
Comic Neue v2.3: Added support for Esperanto, low quotation marks, improved CSS."