This doesn't always work well. Sometimes it's hard to get the pixels to match up 1:1. This can make text look blurry. Also, some TV's only support more familiar PC resolutions through the VGA input, so you end up w/ a 1024x768 image stretched to fit. Some TV's won't allow you to send 1080p over the VGA either...HDCP crap.
I always try to stay in the digital domain if at all possible. +1 for DVI-HDMI.