Gromit's history lesson omits two things of relevance, perhaps: firstly, the reason Britain did deals with Gaddafi was because he claimed to want to abandon his WMD programme (which in fairness he did) and stop sponsoring terrorism (which he sort of did). It wasn't, as implied, that Britain "cracked" under the temptation of all that oil.
Second, it's hardly true to say that the international community seized the chance to oust him. If you remember it looked for some time as though no one was going to do anything to help the rebels. I would be prepared to bet a fair amount of money (monopoly notes anyway :-)) that had there been no intervention, and had the population of Benghazi been slaughtered as Gaddafi threatened, many of those now fuming about NATO, Britain ewtc etc, and agonising over "interference" in a foreign country, would have been protesting about the west standing idly by, protecting its new friend Gaddafi.
You don't get to be a head of state with a nice line in smooth talking and not get to rub shoulders and schmooze with many of one's fellow world leaders (well, unless you're the jet phobic leader of North Korea, perhaps).