Anyone who has read my blog before will tell you, I love a celebrity cameo. What I love more though, is an unexpected celebrity cameo, especially one we've all overlooked because they weren't the famous household name they are today!
Everyone knows there's a lot of celebrities that appear throughout 'Zoolander' (2001) - but do you know quite how many cameo appearances there actually are?
'Sex and the City' is one of those great TV sitcoms that hasn't aged, and is still as relatable today as it was in the 90s, with some surprising celebrity cameos!
Here's 15 celebrity guest stars you'e sure to have forgotten appeared on CSI.