ive also started to get in shonen anime recenctly maybe ive watched to much intellengent anime in the last couple of years after my 'evangelion,gits type' craze that im enjoying something basic and thoughtless which is just fun.
i recommend these
yu yu hakusho - has a slow start but a great line up of character and a evolution in there story which is great.
kenshin - a great series i reallly recommend this especially the kyoto arc.
scryed- a series im watching now and really enjoying i would recommend trying it.
naruto- ive watched about 80 episodes so far and it great.
bleach - ive not seen yet but i have it on fansubs and all ive heard is good things about it.
dragonball/z/gt - the most famous one, this series needs you to turn off your brain and just enjoy the fights but it also has a great line of characters and villains. its main letdown is length , the fights are sometimes too long. also the gt series isnt as good as the other and only worth watching if your a fan.
g gundam- another series that i like its worth looking up, its nothing like the other gundam series it is a tournament anime like yuyu hakusho,dragonball,shamen king. its pretty silly and repetative but its still fun.
fist of the north star - a choice of older people as its more violnet than an of the other ive mentioned but i find it great fun.
ive probably missed a few out so if i think of any more i add them in this topic.