Tucked away under the Views UI's "advanced" fieldset is a too-seldom-used option: Views caching. It allows you to cache the query results and/or rendered markup for any given view. This can drastically improve your site's performance.
Unfortunately, many people don't use this option. Maybe they don't know about it, maybe they've forgotten about it, or maybe they don't like. Well, the Views Cache Bully module is here to say "Too bad. You're gonna cache your views, and you're gonna like it."
To quote Dave Stoline (dstol):