I realise these are not only 'flight' dreams but...
My first experience with OS travel was aged 5 travelling first class Ocean liner from Sydney with my family so my father could take up duty on exchange with the US army in Hawaii for a year. In 1965 people being posted went by sea!
My next dream was flying business class round the world with DH for a 4 month holiday (1990) - the Singapore airlines RTW J ticket was only $500 more per person than QF Y and included more than 20 flights (paper tickets were much less restrictive than etickets) and transfers from JFK to Manhattan via helicopter!
Then (2008) we did an 9 week J class QF/AA/BA RTW "icon" tour with our daughter to show her as many icons of the world as we could before she went into high school. We combined this with a med cruise to hit all the Mediterranean icons. (Think golden gate bridge, grand canyon, Smithsonian, NYC, La Sagrada Familia, Vatican, Colosseum, Pisa, Florence, Acropolis, Big Ben, Stonehenge etc etc etc)
The next goal (2011) was to catch the biggest plane in the world (A380 to LAX) to cruise on the biggest cruise ship in the world (Oasis of the Seas) from Fort Lauderdale.
There have been many business and holiday trips in between - I'm still considering what is next as a dream!
PS - a couple of days ago I flew Syd->Hong Kong QF in the 747 bubble - in seat12b and 12a next to me was empty! sweet