Well, I'm more into VGM lately (especially if they are from obscure, old, japanese PCs), but still I like to tune in to a module from time to time - as my evergrowing 8GB module collection can tell you.
Excellent choices, guys, I recall that there was a time that I've listened to Falcon and Falcon only tunes for at least a month.

Anyways, some other guys I find nice to listen to:
Virt (Jacob Kaufman) - get his chiptunes (released as two musicdiscs by
www.mono211.com). Great NES renditions.
He also made some great game tunes - you can listen to most of them on his website:
http://virt.vgmix.com/Leśnik (Piotr Leśnikowski), Singer (Krzysztof Nowak), Graff (Paweł Daudzward), Core-Nick (Dominik Piekarczyk), Bigyo (Marcin Dąbrowski), Jazzcat (Piotr Pacyna), Jazzman (Przemysław Tumidajewicz) - some lesser known PC Polish composers.
Leśnik has some great chiptunes (bomberwoman, crack_me series, oko_plasy) - his knowledge of weird FT2 quirks is second to none (props to Ian for supporting all of his tunes

). The normal tracks are also great - outskirts_of_warsaw, summer_time_99
Singer is... well, one of *the* underappreciated tracker composers. He didn't make many songs, but every single one of them is great.
Graff has some nice chippies again, but you should definitly get lighthouse_keepers_kite. IMO it's on par if not better than Guitar Slinger.
Core-Nick... I do recall his first tunes which were included in a 'Reader's Creations' corner in one Polish game mag. They sucked, to say the least. After a while he was winning music compos (or at leat being in the top 3) at scene parties. Well, with songs like androids_dream or exit_cyber_spaces it's not that strange.

Bigyo - just try alien_projects_theme or daybreak_in_stereo. His songs remind me a bit Nutcase's modules. And given that Nutcase is one of the better mod composers, it means a lot.
Jazzcat - well, he's an Amiga guy, so most of his recent work is in DBM format. Would be nice if XMPlay finally supported them (it's been a while since a new MOD format was added). He's the guy that recently won Nectarine's mchn compo.
Jazzman was a guy that took part in Music Compos (the only Polish composer I believe). 2nd place at MC5rookie, 1st at MC6intermediate. Too bad there was no MC7, he would probably win the veteran compo there.
You can find music by these guys at ftp.modland.com
Probably some other places as well.