i used to enjoy jameson until i tried tullamore dew now i can't stand jameson.
that said-i enjoy a GOOD irish coffee which for me contains only 3 ingredients-
coffee
irish whiskey
wee bit of milk, cream or smidge of whipping cream
DO NOT pollute it with that nasty irish cream or

a sugar cube.
the one amended way i've had it-only at one bar (though when i've mentioned it to bar staff at others they love the idea) was at christmas time one year-
in the tradition of salting a margarita, take the cup the irish coffee will be served in and wet the rim, take the glass and spin the rim into a mixture of cinnamon and sugar. not something i would want all the time but a nice change of pace.