Was about 2-3 months ago, but I had a 11 month unbeaten run with Real Madrid. From September 2011 to August 2012. Was a loss against Almeria, won around 40-50 games then lost to Manchester United in the European Super Cup.
On FM09 I hit something like 170 with AC Milan, winning everything going something like 3-4 seasons running. I had what I call the 'holy trinity'... Messi, Kaka, Cristiano Ronaldo.
Pretty average compared to the football geniuses here. I have a 21 unbeaten run using Middlesbourgh. It was an away loss to Manchester City 2-0, but there was no shame because the value of their squad is thrice the value of mine. Heh.