I took a little time to search for some pairing .mobi + .com (etc) sites.
Here is the list that I found so far:

Dot Mobi Investors
ericsson.mobi - ericsson.com
google.mobi - google.com
gsmworld.mobi - gsmworld.com
gsmawards.mobi - gsmawards.com
nokia.mobi - nokia.com
samsungmobile.mobi - samsungmobile.com
sonyericsson.mobi - sonyericsson.com
syniverse.mobi - syniverse.com
t-mobile.mobi - t-mobile.com
tim.mobi - tim.it
vodafone.mobi - vodafone.com

Major Corporations
bmw.mobi - bmw.com
bofa.com - bofa.mobi
businessweek.mobi - businessweek.com
cbn.com - cbn.mobi
chinamobile.com - chinamobile.mobi
cnnmoney.mobi - cnnmoney.com
edelman.com - edelman.mobi (Edelman is one of the premier PR firms in the world...clients include the mTLD, Microsoft and dozens of Fortune 1000 companies.)
enom.mobi - enom.com
ferrari.com - ferrari.mobi
foxnews.com - foxnews.mobi
godaddy.mobi - godaddy.com
gsacom.com - gsacom.mobi
innovativeincentives.com - innovativeincentives.mobi
intel.mobi (rd intel.com/homepage/mobile) - intel.com
msn.mobi (rd mobile.msn.com) - msn.com
nba.mobi - nba.com
partybingo.mobi - partybingo.com Coming Soon!
partypoker.mobi - partypoker.com Coming Soon!
paypal.com - paypal.mobi
rolls-royce.mobi - rolls-royce.com
statefarm.com - statefarm.mobi
thalys.mobi - thalys.com
three.mobi - three.com
yahoo.mobi (rd wap.oa.yahoo.com/raw?dp=home) - yahoo.com

Dot com gone Mobi
abcItaly.com - abcItaly.mobi
activitae.com - yaws.mobi
AllPayNews.com - AllPayNews.mobi
adimo.mobi - adimo.com
admob.com - admob.mobi
afilias.com