Question for DVD owners in US

I am looking into buying the DVDs for this show. It would really help if anybody could tell me whether they are closed captioned or if there is an english subtitle option.

I really loved this show when I was young, but have had some hearing loss since then. If anybody could answer this for me, I would greatly appreciate it. Thanks in advance!

Can't wait for the new Sonic Generations game!

"I listened and I heard music in a word."--Pete Townshend