yep!! that's a great thing mama! he's seeing things around him and applying them to his world. let him get up and go!!! he probably still won't walk for a while but he'll have good foundation when he gets there. my son started at 4 months like he's trying to hurry the hell out and get out :( he's almost 4 now and can't be stopped!
That's normal. Two of my kids never crawled! They went straight to walking. One of my kids decided to roll instead of crawl. lol Standing at six months is pretty early. he'll probaby walk early two. Most kids are just learning to sit up at 6 months. My daugter was walking by 9 1/2 months and she never crawled. Make sure everything is babyproof and keep a close eye on him.
my 15 month old has learned so much from my 2 1/2 year old! She has done everything sooner than he did and I believe it's because she watches him do it. The only thing she did late was walking but she knew how, she just didn't, it seemed she was afraid of him :) he knocked her down a lot.