I haven't played LBP1 and have no idea what it actually is or what you do. Is it a game or is it a platform game creator? Can someone try and sell it to me in a paragraph or two?
Basically, if you want to pick up and play, there are levels made by the developer in the game. They are fun, with a good difficulty curve and enjoyable.
The main aim is to get the end and collect the collectables. This is where the game then changes.
With the collectables, which are basically all the items in the levels the developers have made, you can make your own levels, or play ones created by friends, or random people.
You never have to touch the creation system if you dont want to, you can just play the developer ones then the best ones online.
The creating the level is quite interesting, though takes time, effort and patience. There are some fantastic levels created by others that are fun to play.
It is certainly worth picking up the old one as is cheap now, but i reckon you may as well go for the new one as im sure there is enough in it for anyone.
Also, as you see from the vid smd posted, the possibilties are only limited by your imagination or the imagination of others, within reason