Marmite ad campaign

Hi there

I am a Student at the Uni of Kent studying Graphic Design BA and am doing a project based on MARMITE!!! (yum) smile

What i need from you guys is WHY u LOVE it or WHY you HATE it.

What do you think of the marmite advertising campaigns do they work? are they clever, funny, annoying ect?

I am looking to do a series of print ads that are retro 50's style, and 1 for a billboard, i would like to use humour and keep them simple. Some feedback from people in the business and in the know would help my project greatly as it all helps towards my research before i get started!

Any help is greatly appreciated!