Okay, Vibhu hit the nail on the head when he said that Ghajini was named after Mahmud of Ghazni, apparently because he relentlessly pursues the villains in spite of his failures and help from Nayantara. This was confirmed by the Ghajini website, which says, “Ghajini the name is a metaphor for assiduous try.” Enough said.
Which led me to look up what Mahmud was actually trying, when I came across (what else) the Wikipedia entry for Mahmud of Ghazni. Looks like he wasn’t trying as much as he was doing again and again what he did well!
And the Ghajini website did throw in a few gems as well:
On Asin: “Her easy-going smile is good enough to bloom thousand roses.”
On Nayantara: “An actress who is buxom, blithe and debonair.”
I also found out that Murugadoss directed Vijayakant in Ramana. Now, if I had known that before I wrote my reaction…
Lesson learnt: Go through a movie’s website before watching it. Or at least before writing about it!