Look carefully at it; probably you won't be able to use the fastest trains with the JR pass.

Also, if you're just going to Kyoto from Tokyo, it really is not worth it to get the pass. Just buy regular tickets. The pass is useful if you're doing a lot of train travel in a short time.

The not-fastest shinkansen is still pretty fast, and plenty of people enjoy the train for the experience.

That's fine, but if you spend more money to go slower, that's just stupid. The point is that the pass is a really bad deal, or at best, break-even, unless you're traveling a long distance and within a short-ish timespan. Tokyo-Kyoto is not a long distance and isn't worth the pass at all.

You can use the Kodama (all stops) and the Hikari (limited express) with a JR Pass. You'd have to pay extra for the Nozomi (superexpress).