Well personally I've been very envious of iP**e users that they had Sky Go for such a long time and as a Sky customer and an Android user I/we have been left in the dark but finally Sky have released Sky Go for Android.
The list of supported devices is limited but the SGS2 is on that list and will be until you update to ICS which isn't supported, you'll either need to stay in Gingerbread or wait for ICS support from Sky Go when ICS us officially released for the SGS2.
Follow the the market link below for support, device specs and to install Sky Go (UK handsets and Sky customers only).
There is something very unfortunate I have to add here, I am extremely unhappy and still left in the dark because I have a rooted device and Sky Go does not support rooted devices the same as Google video doesn't. I find this ridiculous as having a rooted device is a choice an Android user can make but applications that don't support root is just pain wrong IMO. There must be some other way to protect copyrights without leaving root users in the dark!?!