Disputed domain names of Inter-Continental Hotels Corporation (Full list)
(from http://www.wipo.int/amc/en/domains/decisions/html/2009/d2009-1661.html)

Apple's seized 16 domain names (Full list)

Microsoft's seized 23 domain names (Full list)

Funny written 'Hotmail' domain names (Full list)

Some recommended to block domains to prevent unwanted emails. (Full list)