There's plenty of things in the Bible that lead me to believe God is not good.
Which is the point I am trying to make with Tim. Our understanding of the term is subjective standard often times set by the culture and the generation we happen to be born in. You like Tim can only make this determination by judging God by your own standard of what Good is.
What real evidence to we have of God's goodness? Salvation?
No. God is "good" by default, and for no other reason. Being "Good" for God is not something He must strive for. Because He is infact the standard. Meaning Anything He does is Good by definition or default. Even if "we" like in your Opening Statement find reason to judge His actions as being bad.
God was the one who made hell in the first place.
On what Day did that happen? Hell is the absents of Creation. Hell is the void in which Creation was called out of. Being sent to Hell is being removed from God and what He has created. It is the only escape from the Omni present God.
And even if hell doesn't exist in the Dantean sense, judgment still awaits those who don't sycophantically worship God.
Agreed. But ask yourself what is being judged? Answer: Those who wish to be with God and those who do not. Granted those who do not generally would want all of what God has created, but just not God Himself.
To me that is like a gold digging wife. I am not saying their could not be good times to be shared with someone who only wants you for what you can provide, but at the same time there isn't enough to generally sustain a relationship like that for a life time let alone an eternity. So then the question becomes, What happens in an eternal relationship when the Gold digger has had enough and wants a divorce? Where can he/she go in all of creation to escape an omni-present God? Where is the mercy and love that forces a person to be made to stand in the presents and forced to serve someone in whom he hates?
Also, look at God's laws and measure God's actions by his own laws. He fails miserably. Jealously, anger, hatred and murder are all condemned by God and yet God freely acknowledges that he is a jealous God.
And you know what? Him being a Jealous God is good! Why? Because it is to His standards that all goodness is measured. Anything God wants or does is Good.
He admitted to hating Esau, and is prone to angry outbursts leading to the death of hundreds of thousands of people in the OT, possibly millions. At one point in the OT, Moses has to reason with God and persuade him not to wipe out the Israelites.
Amen, Preach it!
So really, why should I worship a God who doesn't walk his own talk?
Isn't it obvious? It is because the acts in of themselves are not intrinsically evil as you believe them to be. It is our usage of these hard emotions to suit our purposes or self righteousness, that makes them Evil. I will grant you that in our society it is always wrong to think badly of someone, but understand God does not yield to our societal laws/standards. Remember He is the standard to which all righteousness is built. Morality is the "goodieness" that we derive from a collective societal sense of righteousness. God is a God of Righteousness, not the God of popular morality (which btw seems to change from generation to generation.)
So in short you are judging God by what you think or what society has told you is right and not by God's actual "walk or Talk."
Of course, I don't actually believe much of the OT happened as recorded. These were merely the writings of people who were struggling to define God in difficult times, so they presented God as having distinctly human emotions so people could relate to him easier.
-Or- As the bible states We were indeed built in His own image, and share the same emotions He has Himself. Which makes sense if you look big picture.
But the case still remains that the Yahweh presented in much of the OT is really not a God any upright person would want to associate with; and that's simply by measuring Yahweh against his own laws, not my own sense of morality.

Which laws exactly?
Jesus, on the other hand, was totally different. He actually did obey the law properly. This is why I find it hard to believe that Jesus is a true representation of the angry, jealous Yahweh of the OT. They're entirely different. Jesus valued human life whereas Yahweh did not care about it; women, children, old people, babies - he would quite happily kill them all without a second thought. But Jesus was a true humanitarian - with the exception of his doctrine of eternal punishment of course.
John 1:1 places Jesus at the scene at the beginning of the OT. Christ's role in physical His life time was to spare us from that same vengeful wrath He dealt out in the OT. For in the OT The role of the Father was to dictate terms, and the Role of the Son was to carry out the will of the Father. So it would have been Christ Himself that carried out the wrath you speak of. Just like it was the Son who carried out the will of the Father on the Cross.