I've got VCS on PSP and LCS on PS2,
both these games are great, and on psp is good cos u can play multiplayer (only adhoc though), plus PSP u can put custom tracks (your own music)
besides like other people said, the psp is good for movies (the screen is nice and big compared to iPod video) and u can use it for internet (i reckon the net on psp is terrible though. always becomes out of memory, my mobile can go on sites PSP cannot, and it never says anything about memory)
but there are PLENTY of other good psp games, so dont say it like its JUST for lcs+vcs