RSS Feeds: Changing Titles and Descriptions

Hi All:

I wanted to ask, for RSS feeds, whether it's possible to display a different title than the exact title of a blog post. So for example, if a post is titled, "Friday's Dinner" and I wanted the title to appear in feeds (say, iGoogle) as "A Friday Dinner," is that possible?

Also, in iGoogle, for example, I noticed that the when one hovers, it shows the entire content of the post. How do I change this so that it only displays a one or two sentence description that I might write specifically for this?

Many thanks.