Obsequious

Obedient or attentive to an excessive or servile degree

Also, bootlicking: arselicking etc

When I hear the word obsequious it conjures up an image of a very large/portly in the extreme, greasy/oil covered man who is trying to get something from someone by fawning all over them.  This man (to me) looks remarkably like the Baron from Dune! 

Etymology:

late 15c., "prompt to serve," from the Lain - obsequiosus "compliant, obedient," from obsequium "compliance, dutiful service," from obsequi "to accommodate oneself to the will of another," from ob "after"+ sequi "follow" (see sequel). Pejorative sense of "fawning, sycophantic" had emerged by 1590s.