...to the superior PAL format...
This is very opinionated, which you should probably avoid; both NTSC and PAL have their advantages.
This does result in the show going a little faster (and the pitch going higher) as PAL frame rates are higher. You can't really notice it though.
Please get your facts right: NTSC has the faster frame rate, which means if you were to convert NTSC to PAL, the pitch would actually go LOWER and the show would NOT GET FASTER... you'd just get less frames, which would not speed up/down the overall show. However, I must say that PAL does have better quality. And because PAL has a bigger picture, you'd actually lose the original quality because the overall width of the show is CUT.
Original resolution (NTSC): 720x480
PAL's resolution: 720x576
Resized NTSC: 864x576
You'd lose 17% (144 pixels) of the width of the show during the conversion of NTSC to PAL.
Next time, I strongly recommend you to check yourself before you post... your post is not only wrong, it's extremely opinionated. :spongebob:
Sources:
Demtschyna, Michael. "PAL vs NTSC." Michael D's Region 4 DVD Info Page. 07 July 2000. Web. 07 Nov. 2009. <http://www.michaeldvd.com.au/Articles/PALvsNTSC/PALvsNTSC.asp>.
Kimball, Spencer, Peter Mattis, and GIMP Development Team. GIMP. Computer software. GIMP - The GNU Image Manipulation Program. Vers. 2.4.7. The GIMP Team. Web. <http://www.gimp.org/>.