If Landmark (Nungambakkam or Spencers') is too far off, u might be able to find a Connexions nearby. Though they have much fewer titles stocked u'll always find the newly released ones. No console titles however. :| U can also check out Planet M @ Spencers' in case u don't find something @ Landmark. But that doesn't usually happen.
P.S: Reely hard to find original titles newhere else.
if u bargain well, they sell CDs at 25/- and DVDs at 70/-
from the look of it, it seems like a 4th world shanty town though, but looks can sure be deceptive!!!
They'll even sell you iPods at US prices (iPod photo 30Gig= 349$ in the US, 15K /- at Burma bazaar)