Washington ? Highly anticipated decisions on medical marijuana, Ten Commandments displays and Internet sharing of movies and music are still to come in the final weeks of the Supreme Court term.

And then there’s perhaps the biggest story of all — whether the court gets its first opening in a decade.

Chief Justice William H. Rehnquist, 80, has been the focus of retirement speculation since he announced in October that he had thyroid cancer.

Rehnquist has been working full-time and has given no indication of his plans, though most court watchers believe he will step down. His departure likely would lead to a political fight over a successor who could reshape a court divided 5-4 on the death penalty, affirmative action and gay rights.

The court’s opinions already are giving partisans plenty to talk about.

“This term will be a blockbuster,” said Tom Goldstein, a Washington lawyer who argues frequently before the high court. “The court’s rulings on social issues and the role of government will definitely remind everyone of the significance of a single Supreme Court appointment.”

The court already has issued two of its more notable rulings — 5-4 opinions striking down mandatory sentencing guidelines as a violation of a defendant’s right to a jury trial and outlawing the death penalty for those who were juveniles when they committed their crimes.

While the death penalty ruling was somewhat expected given earlier rulings narrowing the scope of capital punishment, some congressional Republicans blasted the opinion by Justice Anthony Kennedy for citing international sentiment against executing juveniles. House Majority Leader Tom DeLay, R-Texas, condemned the Reagan appointee’s work as “incredibly outrageous,” and others called for his impeachment.

May and June traditionally are the court’s busiest months, and this year is no different. There are 35 opinions remaining before justices take a summer break.

One of the most closely watched decisions involves whether states can shield medical marijuana users from federal prosecution on drug charges. The case, which was heard last November, pits the conservative anti-drug interests of the Bush administration against conservative principles of states’ rights.

Another emotional issue involves Ten Commandments displays. Justices will rule in a pair of cases asking whether such displays on government property violate the Constitution’s ban on “establishment” of religion. It’s the court’s first review of the issue since 1980.

Last year’s major church-state issue involved whether “under God” should be included in the Pledge of Allegiance recited in public schools. The court punted on that case on technical grounds, but that’s not expected with the Ten Commandments cases.

Other major rulings expected soon concern whether states can bar interstate wine sales over the Internet — a dispute testing the limits of state power in regulating alcohol — and whether the government can force beef producers to pay fees that are used to promote the industry, even if producers disagree with the method.

Justices also will rule in a property rights case that asks whether cities may seize people’s homes to make way for economic development projects. And it will decide a big-money dispute over whether Internet file-sharing services should be held responsible when their customers illegally swap songs and movies online.