Genealogy of the show?

saw Will and Grace (liked it enough to watch a couple seasons...)

Never seen How I met Your Mother... sorry and not sure what is Coupling...

But I liked Happy Hour...but I guess its gone?

It does remind me a little bit of the U.S. version of Coupling, though I think it's better. I haven't seen the U.K. version, which I hear is way better than the U.S. remake, so I can't make comparisons with it.