Recommendations on place(s) to visit in Switzerland

Lots of good advice here. Aribo has made some very helpful and well-informed comments, so post #5 is just bizarre.

Personally, I really enjoy long days looking at good views through a train window, and for me that is one of the great pleasures that Switzerland offers. So if you decide to take the long and expensive train journey from Paris to Venice, consider routing yourselves through Switzerland. Towards the end of your last day in Paris you could get a train to Geneva: this journey can be very affordable if you book one of the 'prems' on the voyages-sncf web site. Sleep in Geneva (expensive) and set off early the next morning, preferably taking the 'Golden Pass' (a special train with observation cars). You travel the length of Lac Leman, then ascend steeply into the mountains, and will experience a glut of great views. Consider spending a night in eastern Switzerland and then entering Italy via one of the most spectacular mountain train rides on the entire planet. But only consider this if you really, really like good views from trains.

Thanks Fwoggie! I checked out easyjet prices and it def cheaper than the train journey and shorter in duration as well! It seems to be the best choice considering we don't have much days to spare. That said, I would have loved to travel via train to see the scenic views, as suggested by Voyager_2002.

@ansh_jain_97 - I will be travelling from Washington, D.C, USA.

Fwoggie: I have not the same timetable for the night train (in March 2012):
Paris Gare de Lyon dp 19.45 - Venezia Santa Lucia ar 9.34
Fares:
3 bed cabin: 112 EUR/pax
2 bed cabin: 145 EUR/pax
Cuccetta: 80 EUR/pax
http://www.thello.com/destinations/Horaires/index.html

Aribo has made some very helpful and well-informed comments, so post #5 is just bizarre
Just for clarification purposes: posts #5 and my reply to it have now been deleted by the moderators.

#11 Book as soon as you have firmed up your itinerary (but not before, they don't do refunds or changes cheaply) as the run on a first come cheapest served basis. Make sure you can get to/from the airport also in time (i.e. public transport or taxi) if going for a flight at an unsociable hour.

#12 - Fair enough, I grabbed mine from bahn.co.uk. Lets go with your info, gonna be better than mine.

And my accusation of #5 in #6 usn't toward Fwoggie!

Thanks everyone for the helpful recommendations!