I guess I should take this one. Not sure of your location, but I'll presume you don't know the County.
I can recommend good pubs, but I'll be hard pushed to recommend pubs with interesting/different beers.
Waterford city may be your best bet for finding a pub with a good beer selection, but I don't know the place that well.
Staying coastal, Dunmore East is a nice fishing village with a small beach. There are a couple of nicepubs and restaurants whose names escape me at the moment. Next along is Tramore. A tourist-orientated town with a big beach and loads of amusements etc. I can't really recommend a pub, but if you like water sports like surfing this is the place for you.
Heading west, I recommend taking the coastal route, if you're not in a rush. Spectacular views of the sea, and some nice villages along the way.
Dungarvan, my home town (to quote the song) is also by the sea. Down on the quay the Moorings is a good spot. Nice pub, beer garden, or you can sit out front. They also do food. Further up the quay is the Anchor, which used to be a great pub, but only recommend it if you're young and hip now. Just off the Square, coming from the quay is the Lady Belle, another good spot.
Just off the opposite corner of the Square is Quealy's. This is your best bet for a slightly different beer, and even that will be nothing too unusual. They do great food here. If the Local, in the Square, has music on it will be the best trad music in town, if that's your thing.
A couple of miles outside the town is Ring, a headland you can see from the town, where I live. Just off the main Cork road is the Seanachaí, an old thatched pub, also with food. Further down into Ring, towards Helvick there are three pubs. Mooney's is probably the busiest, and often has music on, Murray's, further on towards Helvick is the nicest if you ask me. Very local pub, nice to sit out in front on a sunny day, looking out to sea.
The next coastal stop, heading west, is Ardmore. A small village, with a big beach. White Horses is a good restaurant here, and Paddy Mac's pub is probably the best of a limited few.
Enjoy.
Now I'm off to collect my commission from the Waterford Tourist Board.