Dieter Steffman's Marker Felt is similar, but not the same. you might also want to check out One Stroke Script from Letraset.

Metadox -- you were correct with Marker Felt -- just that it's Marker Felt Light.

Anyone know the real origin of Marker Felt? It's now supplied with Mac OS X, but the versions digitized by Dieter Steffman and various shareware/freeware designers are different. The "Marker Felt Thin-Plain Regular" face on this page seems to match the "a" in the sample, but I don't know if this is an approved version of the font as far as Typophile is concerned.

http://www.typophile.com/forums/read.php?file=/83/40517.html
http://www.typophile.com/forums/read.php?file=/83/40813.html

hmmmmm.......????

Metadox. I can answer your question about the creator of the
Marker Felt fonts. That was Pat Snyder (who correctly shows
up in the copyright of the font you linked to in your last post).
I registered my copies of various of his fonts long ago.

Mr. Snyder used to have a Web page, but that disappeared
years ago. All efforts of mine to find and contact him again
a few months ago failed.

The fonts were originally (no surprise) for the Mac and can
be found here, complete with documentation. Mac folk: See
his nifty SnyderSpeed font as well. Marker Felt Wide and
Marker Fine Point for Windows may be found here (file
names begin with mf) with docs.

This Apple web page gives credit to Pat Snyder. I hope that
they gave him some cash too.

Thanks for that info, Mike. So it looks like Pat Snyder designed the font circa 1992 and then Dieter Steffman filled out the character set in 2001, at least for the normal weight (don't know if he got permission from Snyder), then Apple licensed the normal weight for OS X.