Just found out on the awesome Metafilter that they have put all of these sketches online and called them, aptly enough, Amul Hits. Since I have been here in the US, I have been missing out on these. Good to know that there is one place where I can just go and read up on the latest sketches. They have ones going back as far as 1976.
BTW, if you don't know what Amul is and how it works, read it here. This is one of the most successful cooperative efforts that directly benefits the farmers in Indian Villages. The story of the ad mascot The Amul Butter Girl is also pretty cool.
I looked around in the 2004-2005 section and here are a few of my favorite ones:
On Athens Olympics 2004 - August'04
Bush v Kerry - November'04
On the ownership issue in the Reliance Group between brothers Mukesh Ambani and Anil Ambani - November'04