like me giles , you are well positioned with your .tv names , its already a great brand name/extension , pity i cant afford to keep all my .tv channel names !!!!! the good news is because of cost , hopefully there is some room left in the aftermarket for domainer sales, some say this will only strenghten the .com , i will be renewing my ones
it would be good to go for some of the TLD's like .om or .nt or those that represent mispellings of .com, .net and .org, though im not sure on how receptive ICANN would be going after those TLD's