Hullo,
Thank you so much for responding to my message. I really
appreciate the information/help that you provide.
As it turns out, cruisewest has 8-day one-way cruises between
juneau / seattle - which is exactly what I was looking for.
Now I can plan to :
1. Fly into anchorage.
2. Do a 4-5 day on-land tour with denali etc.
3. Fly into juneau and do local sightseeing.
4. Take the cruise from juneau -> seattle.
I'll be sure to bug you guys for more information as I do more planning 
Really excited about my trip !!
Btw, will I need to have a canadian visa to be on the cruise ( That was one
of the reasons that I did not want to cruise from Vancouver - as the visa will
be a problem for me) . Any info on that ?
Thanks,
Ashish