For those who download movies from YTS, the in-built subtitle downloader usually offers a Malayalam track. The quality is average (B+), but the timing is synced perfectly with their specific encodes.
Saif Ali Khan’s portrayal of the comic artist Karan (the "Tiger") and Rani Mukerji’s restrained yet fiery Rhea (the "Pigeon") created magic. Their arguments are linguistic ballets. Without Hum Tum Malayalam subtitles, viewers miss the puns regarding "Hum" (Me) and "Tum" (You) versus "Aap" (Formal You).
A: Rarely. The DVD commentary by Kunal Kohli and Saif Ali Khan is only available in English. No fan group has translated that to Malayalam yet.
Although Subscene is largely defunct, its archive is still accessible via the Wayback Machine or mirror sites. Look for the uploader named "Mallu_Freak_2009" – this specific user created a golden standard of Hum Tum subtitles that included cultural notes in parentheses.