Oooh - this is my kind of thread!
No more than 8 I reckon. Def go for ease of meal on the night over pretentious stuff - you don't want to miss out on the whole shebang - and def nothing worse than host being absent.
Always offer water. I get the most drunk at those where people don't - and I forget to ask (don't worry, I don't disgrace myself)
Cold starter and pud - yes yes yes. One of the puds which went down most successfully in my house, was the easiest (so easy, yet it took a magazine to give me the idea) - good quality vanilla ice cream, and loads of little dishes of smarties/fudge/mini marshmallows/fudge sauce etc etc. Got more of a "wow" than any other pud I've ever done - including the bloody awful (sickly) white chocolate torte that I slaved hours over.
Main course - something with a salad to accompany - no faffing with veg on the night.
Starters - I like doing nibble-type ones (smoked salmon on sticks) but get fed up of handing them round.
Flowers - if you're hosting, make sure you've dug out a vase (discreetly) for any that arrive. If you're taking, fgs, get the sort that come with a stand-up water pouch thing. Last thing a busy hostess needs, is flowers hanging round the kitchen!
Drink - if you're not good at/able to keep glasses topped up, either nominate sby else or insist that everyone help themselves. Nothing worse than sitting there with an empty glass.
Leftovers - absolutely HATE it, when people insist on you having seconds "oh come on - have some more - it's not worth leaving". You shouldn't have over-catered, then. Bog off.
To all diners - PLEASE will you ensure that everything has been passed round the table, before you tuck in? (Especially to the hostess who sits down last and gets least to eat!)
Oh, but I love dinner parties. Wonder why I don't get invited to many - could it be all my rules and regulations ?